NovelTV series · Direct adaptation

Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch → Good Omens (2019-2026)

Season 1 adapts Pratchett and Gaiman's 1990 novel across six episodes, keeping or condensing 32 of the 34 scored source beats, and closes on an invented trial. Season 2 and the single Season 3 special, seven of the show's thirteen episodes, tell a story no published text covers.

Source
Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch · Novel · 1990 · Two introductory sections ("In the Beginning," "Eleven Years Ago") followed by five day-titled sections, Wednesday through Sunday
Terry Pratchett (author), Neil Gaiman (author)
Gollancz (UK) / Workman (US)
Adaptation
Good Omens · TV series · 2019-2026 · 13 episodes across 3 seasons (6 + 6 + 1 special)
Neil Gaiman (creator, showrunner (Season 1-2); writer (Seasons 1-3, partial)), Douglas Mackinnon (director)
Amazon Prime Video / BBC Studios
TrueToPage 82 · Good Omens (2019-2026 Broadcast series) · v0.3censuscatalog score

The composite and the five source-facing axes (plot_structure, character, dialogue_voice, theme_tone, coverage) describe Season 1, the one season with a published novel to check against. Seasons 2 and 3 are screen-original and have no book to compare, so the whole-run composite averages fidelity to the novel against a restraint score computed over a run that is mostly not the novel.

The single 90-minute Season 3 special (May 2026) was completed after Neil Gaiman's departure from the production, which followed public allegations against him in 2024 that he has denied. Some of his earlier writing for the finale was reportedly retained. He is no longer credited as an executive producer or as the season's writer of record.

Two book beats, Anathema's unread second prophecy book and Crowley and Aziraphale's closing exchange about a coming Heaven-and-Hell war, could not be confirmed as present on screen from any live, reviewed source. Both are scored conservatively under the when-in-doubt rule, as omitted or as excluded from the count.

Fidelity

Higher = more of the source is still true. Fidelity is not quality.
Season 1 (2019)
83
Season 1 adapts the novel's full seven-part structure across six episodes. In 2019 interviews the showrunner and the director described the production as setting out to translate the book rather than adapt it loosely. plot_structure (87), character (88), dialogue_voice (58), theme_tone (83), and coverage (94) are unchanged from the whole-run numbers, since only Season 1 touches a published text. Counting the four change-log rows attributable to this season, Gabriel's creation, the extended history sequence, the Heaven-office expansion, and the finale trial and body swap, against the same 32 source beats gives Season 1 its own additions_restraint of round(100 x 32 / 36) = 89, above the whole-run additions_restraint of 80. The mean of these six values, round((87 + 88 + 58 + 83 + 94 + 89) / 6), gives a Season 1 composite of 83.
Seasons 2 (2023) and 3 (2026)
no source text
No published Pratchett or Gaiman text, including the sequel the two authors sketched and never wrote, covers this period of Aziraphale and Crowley's story. These two seasons are seven of the show's thirteen episodes, and both are the production's own continuation. The Season 3 special was completed after Neil Gaiman's departure. The era is marked unscored because there is no published source text to check it against.
Plot structure87The record carries 35 novel-derived mapping rows. One of them, Anathema's unread second prophecy book, carries low confidence and leaves the arithmetic per v0.3-census, which leaves 34 rows and 62 weighted points. Weighting each row by rough source length (1 to 3) and crediting kept beats 1.0 and condensed beats 0.7 gives 53.9 of those 62 points: plot_structure = round(100 x 53.9 / 62) = 87. The novel's five day-titled parts, Wednesday through Sunday, map onto six episodes. The largest condensed cluster is the Friday-into-Saturday stretch, where Shadwell's accidental banishment of Aziraphale, the bookshop fire, and Crowley's M25 chase fold together. The largest omitted unit is the novel's parody second Four Horsemen, cut for time. Seasons 2 and 3 have no published text to structure, so this axis measures Season 1 only. The full weighted table is in the REPORT.partial evidenceN = 34 beats, source weight 62
Character88Ten rows carry a character score, and their prominence-weighted mean (leads 3, supporting 2) is 88. The three leads score 100 for Aziraphale, 100 for Adam Young, and 89 for Crowley, whose one altered trait is his hair color, dark in the novel and red on screen. Four of the six supporting rows score 100: Newton Pulsifer, Madame Tracy, Agnes Nutter, and the Four Horsemen as one combined row. Anathema Device scores 80 on her raw tally, and the trait behind that, her unread second prophecy book, carries low confidence and leaves the arithmetic, so she enters this rollup at 100. Sergeant Shadwell scores 75 on the one attested detail this record could not confirm on screen: whether his ending with Madame Tracy is a marriage, as the novel states, or the unconfirmed domestic partnership the only reviewed finale synopsis describes. The tenth row is the novel's second, parody quartet of Four Horsemen bikers, cut from the show and held at 0 under the v0.3-census rule that omitted source people stay in the table. The archangel Gabriel does not enter this axis: per multiple reviewed comparisons the character does not exist in the 1990 novel in any form, so he is recorded with delta 'added' and excluded from the denominator. Full trait tables are in the REPORT.partial evidenceN = 10 people, weight 23
Dialogue & voice58Of twelve inventoried voice markers, the long-series minimum, seven are preserved: the deadpan understatement about apocalyptic events, the register contrast between Aziraphale's fussiness and Crowley's modern slang, Sergeant Shadwell's Scots-inflected witchfinder jargon, Agnes Nutter's archaic prophecy diction, the periodic omniscient commentary on human nature, Crowley's menacing addresses to his houseplants, and the overall deadpan tone of an apocalypse called off. Three markers have no direct visual-medium equivalent and are dropped: the novel's literal footnotes, its newspaper-pastiche interludes, and its extended digressive asides. Two are altered rather than kept or dropped: the dry third-person narrative voice becomes an onscreen narrator character voiced by Frances McDormand, and the corporate-bureaucratic register applied to Heaven and Hell is expanded into a staged office-comedy register. dialogue_voice = round(100 x 7 / 12) = 58. The full marker inventory is in the REPORT.partial evidenceN = 12 voice markers
Theme & tone83Of six inventoried thematic claims, five are preserved in Season 1: free will over inherited destiny in Adam's rejection of Satan, ordinary human life as the thing worth saving over abstract cosmic conflict, Good and Evil as institutional categories individual angels and demons can defy, cross-side friendship outweighing tribal loyalty for Aziraphale and Crowley, and accurate prophecy being close to useless without exact context in Agnes Nutter's book. The sixth is altered. No reviewed synopsis of the Season 1 finale confirms the novel's closing suggestion that the real coming conflict is humanity against a united Heaven and Hell, and the two further seasons instead follow individual angels and demons defying their own sides. theme_tone = round(100 x 5 / 6) = 83.partial evidenceN = 6 thematic claims
Coverage94At the novel's own seven-part granularity, two introductory sections, 'In the Beginning' and 'Eleven Years Ago,' plus the five day-titled parts Wednesday through Sunday, 32 of 34 scored beats appear on screen kept or condensed. The excluded beat, Anathema's unread second prophecy book, carries low confidence and leaves the arithmetic under v0.3-census: coverage = round(100 x 32 / 34) = 94. The two beats scored as absent in any form are the novel's parody second Four Horsemen and the leads' closing exchange about a coming Heaven-and-Hell war.partial evidenceN = 32 of 34 source units present
Additions restraint80Against 32 source beats that appear on screen in some form, the change log counts eight invented arcs and devices: the archangel Gabriel, the extended Aziraphale-and-Crowley history sequence staged most fully in the Episode 3 cold open, the office staging of Heaven's bureaucracy, the finale's trial by Heaven and Hell with its body-swap survival, Gabriel's amnesia-and-Beelzebub arc, the Nina-and-Maggie matchmaking subplot, Aziraphale's promotion to Supreme Archangel and the separation that follows, and the single Season 3 special that resolves it. additions_restraint = round(100 x 32 / 40) = 80, where 40 is the 32 source beats plus the 8 invented ones. The count covers the whole broadcast run, including the two seasons that adapt no published text.partial evidenceN = 32 source beats, 8 invented
0255075100S1S2S3no source textSeason 1 (2019): TrueToPage 83
TrueToPage fidelity by era. Eras with no published source text are unscored, not zero. Reception scores (Rotten Tomatoes, IMDb) will appear here under licence; until then the linked pages carry them.

Source-backed span: Season 1 (2019). Seasons 2 (2023) and 3 (2026) continue past the published source and are not scored for fidelity; their additions are carried by the restraint axis.

Ending

Side by side, in our words.
On the page · Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch

The novel ends with Armageddon averted. Adam banishes Satan and rewrites people's memories of the events, and the story moves on. Crowley and Aziraphale conclude that the cancellation was God's plan all along, and they speculate that the real coming conflict will be humanity against the combined forces of Heaven and Hell. Madame Tracy marries Sergeant Shadwell. Anathema receives a second book of Agnes Nutter's prophecies and burns it unread. The book does not say what happens to Crowley and Aziraphale as a consequence of their defiance.

On the screen · Good Omens

Season 1 closes on an invented trial. Heaven and Hell each sentence their own agent for treason, Aziraphale to hellfire and Crowley to holy water, and both survive because they swapped bodies beforehand. Both sides then agree to leave them alone, and the season ends with the two toasting 'to the world' at the Ritz. Season 2 (2023) ends with Aziraphale accepting Heaven's offer to become Supreme Archangel and returning to Heaven while Crowley stays on Earth. The single Season 3 special (May 2026), completed after Neil Gaiman's exit from the production, resolves that separation and closes out the series.

The two endings run together up to Armageddon's prevention. The trial, the body swap, and any account of what becomes of Crowley and Aziraphale afterward are invented for the screen, since the novel does not say. Seasons 2 and 3 then cover a screen-original story of an amnesiac archangel, a secret romance, a promotion to Supreme Archangel, and a reconciliation, with no published Pratchett or Gaiman text to compare against.

Mapping

37 rows. Every source unit, including the ones that never appear.
Source unitWhat happens thereOn screenNotesEvidence
In the Beginning: the Eastern GateThe angel Aziraphale, guarding Eden's Eastern Gate, gives away his flaming sword to the newly expelled Adam and Eve for protection, watched by the serpent Crawly.Season 1, 'In the Beginning' (S01E01), cold openkeptstrong
In the Beginning: Crowley's fallCrowley is established as a demon who 'did not so much Fall as saunter vaguely downwards,' with little enthusiasm for villainy.Season 1, narration across the seasonkeptpartial
In the Beginning: six millennia of the ArrangementAcross recorded history, Aziraphale and Crowley keep crossing paths and drift into an informal non-aggression pact, doing small favors and covering each other's assigned miracles and temptations.Season 1, 'Hard Times' (S01E03) cold open and recurring flashbackscondensed and expanded into one continuous historical sequence (Noah's Ark, the Crucifixion, the Globe Theatre, the French Revolution, the WWII Blitz); the novel carries this history in scattered references rather than staged scenesstrong
In the Beginning: the bookshopAziraphale is established as a rare-book collector who runs an antiquarian bookshop and deliberately avoids selling any of his stock.Season 1, throughoutkeptstrong
In the Beginning: the BentleyCrowley owns a 1926 Bentley that stays pristine no matter what happens to it and plays only what he wants to hear.Season 1, throughoutkeptpartial
Eleven Years Ago: the handoverHell delivers the infant Antichrist to Crowley, with instructions to swap him with the newborn son of the American Cultural Attache, Thaddeus Dowling.Season 1, 'In the Beginning' (S01E01)keptstrong
Eleven Years Ago: the mix-upThe Satanic Chattering Order of St. Beryl mishandles the swap at the hospital; through an ordinary human mistake, the real Antichrist goes home with the Young family in Tadfield instead of the Dowlings, as Adam.Season 1, 'In the Beginning' (S01E01)keptstrong
Eleven Years Ago: Nanny and gardenerBelieving Warlock Dowling to be the Antichrist, Aziraphale and Crowley pose as his nanny and gardener for eleven years so the boy grows up unable to fully choose Good or Evil.Season 1, 'In the Beginning'-'The Book' (S01E01-E02)keptstrong
Eleven Years Ago: Adam and the ThemAdam grows up an ordinary boy in Tadfield with his gang of friends, Pepper, Wensleydale, and Brian, known as the Them.Season 1, 'In the Beginning' onwardkeptstrong
Eleven Years Ago: the mistake goes unnoticedNeither Heaven, Hell, Crowley, nor Aziraphale realizes the swap failed until Warlock's eleventh birthday nears.Season 1, 'In the Beginning' (S01E01)keptstrong
Wednesday: the wrong boyAt Warlock's birthday party, the hellhound meant to bond with the Antichrist fails to appear, and Crowley and Aziraphale realize they have spent eleven years watching the wrong child.Season 1, 'In the Beginning'-'The Book' (S01E01-E02)keptstrong
Wednesday: Agnes Nutter's executionIn 1656, the witch and prophetess Agnes Nutter is burned at the stake; she has packed gunpowder and nails into her clothes, and the explosion kills the witchfinder and the mob that condemned her.Season 1, 'The Book' (S01E02), flashbackkeptstrong
Wednesday: the book reaches AnathemaAgnes Nutter's book of prophecies has passed down to her descendant Anathema Device, who is using it to track the Antichrist; Crowley's Bentley nearly runs her down on the road.Season 1, 'The Book' (S01E02)kept, condensedpartial
Wednesday: Newton recruitedNewton Pulsifer, fired after breaking his employer's computers, answers a classified ad and is recruited as the sole private of the Witchfinder Army by Sergeant Shadwell.Season 1, 'The Book' (S01E02)keptstrong
Wednesday: Anathema in TadfieldAnathema travels to Tadfield and meets Adam without realizing he is the boy she is looking for.Season 1, 'The Book' (S01E02)keptstrong
Thursday: Adam's subconscious powersAdam reads Anathema's discarded occult and conspiracy magazines, and his subconscious reality-warping power begins triggering strange phenomena worldwide, from raised Atlantis to summoned UFOs.Season 1, 'Hard Times'-'Saturday Morning Funtime' (S01E03-E04)kept, condensedstrong
Thursday: the Four Horsemen summonedWar, Famine, Pollution, and Death each receive their summons and begin converging on England.Season 1, 'Hard Times'-'Saturday Morning Funtime' (S01E03-E04)keptstrong
Thursday: War the correspondentWar, posing as a glamorous war correspondent, personally engineers an international arms-fueled conflict.Season 1, 'Saturday Morning Funtime' (S01E04)keptpartial
Thursday: Famine's diet empireFamine runs a diet-food and fast-food empire that quietly starves the people who consume it.Season 1, 'Saturday Morning Funtime' (S01E04)keptpartial
Thursday: the second Four HorsemenA parody second quartet of bikers, taking names like Grievous Bodily Harm and Cruelty to Animals, follows the real Horsemen toward England as a comic subplot.not present on screenomitted; Collider reports the cut was made for time and budgetstrong
Friday: the bookshop fireShadwell accidentally sends Aziraphale to Heaven via a summoning ritual and, separately, sets Aziraphale's bookshop on fire.Season 1, 'Saturday Morning Funtime' (S01E04)kept, condensedstrong
Friday: Newton reaches TadfieldNewton drives to Tadfield to investigate the strange phenomena on Shadwell's orders, crashes his car, and meets Anathema.Season 1, 'Saturday Morning Funtime'-'The Doomsday Option' (S01E04-E05)kept, condensedpartial
Friday: Adam's dreams intensifyAdam's dream-driven changes to reality escalate and begin to worry his friends.Season 1, 'Saturday Morning Funtime' (S01E04)keptpartial
Friday: Crowley's M25 chaseBelieving Aziraphale destroyed, Crowley drives frantically toward Tadfield through a ring of demonic fire encircling London.Season 1, 'The Doomsday Option' (S01E05)kept, condensedstrong
Friday: Hastur and Ligur dispatchedThe demons Hastur and Ligur, sent to monitor and punish Crowley, are separately defeated: one dissolved by holy water, the other outmaneuvered through Crowley's resourcefulness.Season 1, 'The Doomsday Option' (S01E05)kept, condensedpartial
Saturday: Aziraphale inhabits Madame TracyDiscorporated in Heaven, Aziraphale returns to Earth by possessing the body of the psychic medium Madame Tracy during a seance.Season 1, 'The Doomsday Option' (S01E05)keptstrong
Saturday: convergence at the air baseEveryone converges on Tadfield Air Base as the Four Horsemen begin a nuclear war by tampering with military computer systems.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)keptstrong
Saturday: the Them defeat the HorsemenAdam and his friends defeat War, Pollution, and Famine by refusing to accept their roles; Death alone departs undefeated.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)kept, condensedstrong
Saturday: Adam rejects SatanSatan begins to ascend to claim his son, but Adam, asserting his own humanity and free will, rejects and banishes him, preventing Armageddon.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)keptstrong
Saturday: Heaven and Hell both wanted thisBoth Heaven and Hell are revealed to have wanted Armageddon equally and are frustrated by Adam's refusal to let it proceed.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)keptpartial
Sunday: the world resetsWith Armageddon averted, the world returns to something like normal, and Adam quietly edits people's memories of recent events.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)keptstrong
Sunday: musing on a coming warCrowley and Aziraphale muse that Armageddon's cancellation was God's plan all along, and speculate that the real coming conflict will be humanity against the combined forces of Heaven and Hell.not confirmed on screenomitted (unconfirmed); no reviewed synopsis of the finale describes this closing exchange surviving in this formpartial
Sunday: Shadwell and Madame TracyMadame Tracy marries Sergeant Shadwell, effectively disbanding the two-man Witchfinder Army.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)kept in substance; the only reviewed finale synopsis confirms the two retire together and does not use the word 'marry'partial
Sunday: Anathema and NewtonAnathema begins a relationship with Newton Pulsifer.Season 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)keptstrong
Sunday: the second prophecy bookAnathema receives a second book of Agnes Nutter's prophecies, but chooses not to read it and burns it instead.not confirmed on screenomitted (unconfirmed); no live, reviewed source confirms this scene airs in any seasonthinnot scored
No published novelNothing in the 1990 novel, or in the unwritten print sequel Pratchett and Gaiman once sketched, covers this period of Aziraphale and Crowley's story.Season 2 (2023), 6 episodesno published source. Gabriel's amnesia, his demotion and memory-wipe by Heaven, his romance with Beelzebub, the Nina-and-Maggie matchmaking subplot, and Aziraphale's promotion to Supreme Archangel are all original to the show.strong
No published novelNothing published by Pratchett or Gaiman covers this period.Season 3 (2026), 1 special episodeno published source. The single 90-minute finale resolving Aziraphale and Crowley's Season 2 separation is original to the show, and it was completed after Neil Gaiman's departure from the production.strong

Change log

The argument. The mapping above is the evidence.
  • Invented
    The archangel Gabriel is created for the show as Aziraphale's direct superior in Heaven. Multiple reviewed comparisons state he does not appear in the 1990 novel in any form.
    novel, no equivalent characterSeason 1 onward
    Adds a named Heaven-side superior and a recurring antagonist the novel does not contain. Gaiman has said the character was built in part from material the two authors sketched for an unfinished print sequel.
    Attribution: Neil Gaiman, per Syfy Wire and Collider interviews
  • Invented
    An extended sequence of Aziraphale and Crowley's six thousand years together is staged for the screen, most fully as the Episode 3 cold open, from a handful of scattered lines in the novel.
    In the BeginningSeason 1, 'Hard Times' (S01E03) and recurring flashbacks
    Converts backstory the novel carries in passing references into staged scenes, and makes the two leads' shared history a recurring structural device across the season.
    Attribution: Neil Gaiman and director Douglas Mackinnon, per Syfy Wire
  • Omitted
    The novel's second, parody quartet of Four Horsemen bikers, who adopt names like Grievous Bodily Harm and Cruelty to Animals, is cut from the show entirely.
    Thursdayno episode
    Removes a comic subplot that runs alongside the real Horsemen for a stretch of the novel. Collider reports the cut was made for time and budget.
    Attribution: unknown_production_decision, per Collider
  • Omitted
    The novel's device of Freddie Mercury's voice delivering messages from Hell through the radio of Crowley's Bentley is cut from the show.
    novel, recurring deviceno episode
    Drops a recurring device the novel uses to put Hell in direct contact with Crowley. Collider reports music rights as the reason.
    Attribution: unknown_production_decision, per Collider
  • Identity / design change
    Crowley's hair is changed from the novel's dark hair to red.
    In the BeginningSeason 1 onward
    Alters one of the few physical details the novel states for Crowley, and it is the single altered trait in his row. Collider reports the change was made to give him a more hellish look.
    Attribution: unknown_production_decision, per Collider
  • Tonal shift
    The Them's ducking-stool game in the novel is replaced with a tire swing in the show.
    novel, the Them's play scenesSeason 1
    Changes one prop in an incidental play scene while keeping the scene itself.
    Attribution: unknown_production_decision, per Collider
  • Invented
    The finale invents a trial in which Heaven and Hell each sentence their own agent to execution, and a body swap that lets both survive. The novel stages no such judgment and does not say what becomes of Crowley and Aziraphale after Armageddon is averted.
    SundaySeason 1, 'The Very Last Day of the Rest of Their Lives' (S01E06)
    Supplies an outcome for a fate the novel leaves unstated, and stages a joint act of defiance by the two leads that the book does not contain.
    Attribution: unknown / production decision
  • Kept, unflinching
    Agnes Nutter's burning at the stake and the gunpowder and nails she packs into her clothes are kept in full as a flashback.
    WednesdaySeason 1, 'The Book' (S01E02)
    Keeps the full mechanism of her death and of the deaths it causes, including the explosion that kills the witchfinder and the mob.
    Attribution: unknown / production decision
  • Invented
    Heaven is staged as a sparse, minimalist corporate office with a chain of command (Gabriel, Sandalphon, and others), where the novel treats Heaven's bureaucracy in scattered references.
    novel, scattered references to Heaven's bureaucracySeason 1 onward
    Turns an implied bureaucratic register into a staged visual one that recurs across all three seasons.
    Attribution: Neil Gaiman, per Collider
  • Invented
    Season 2 (2023) invents a mystery arc in which the archangel Gabriel arrives amnesiac at Aziraphale's bookshop, having been demoted and had his memory hidden inside a fly by Beelzebub after the two fell in love.
    no published textSeason 2 (2023)
    Builds a season of plot on a relationship and a punishment mechanism with no basis in any published Pratchett or Gaiman text.
    Attribution: unknown_production_decision, per Collider
  • Invented
    Season 2 invents a matchmaking subplot in which Aziraphale and Crowley engineer a romance between coffee-shop owner Nina and record-shop owner Maggie, including a Regency-themed ball at the bookshop.
    no published textSeason 2 (2023)
    Adds two named characters and a full subplot with no source basis.
    Attribution: unknown_production_decision, per Collider
  • Invented
    Season 2 ends with Aziraphale accepting Heaven's offer to become Supreme Archangel and returning to Heaven while Crowley remains on Earth. The two leads part with the separation unresolved.
    no published textSeason 2 (2023), finale
    Invents a promotion, an offer, and a separation for two characters whose fate after Armageddon the novel does not address.
    Attribution: unknown_production_decision, per Collider
  • Invented
    A single 90-minute Season 3 special resolves the Season 2 separation and closes out the series. It was completed after Neil Gaiman's departure from the production.
    no published textSeason 3 (2026), single special
    Closes a screen-original storyline. Some of Gaiman's earlier writing for the episode was reportedly retained, and the finished version is credited to other writers after his exit.
    Attribution: Neil Gaiman (partial, pre-exit) and other credited writers, per Newsweek and CBR
  • Reordered
    The novel's five-day structure, Wednesday through Sunday, is compressed so that book material is front-loaded into the first two episodes, while Episodes 3 and 4 place the original Aziraphale-and-Crowley history material ahead of some Thursday and Friday beats.
    Wednesday-FridaySeason 1, Episodes 2-4
    Changes the order in which the search-for-the-Antichrist plot and the two leads' backstory reach the viewer.
    Attribution: Neil Gaiman and Douglas Mackinnon, per Syfy Wire

People

Trait score = attested traits kept ÷ attested traits shown. Unstated traits are not rows.

These tables roll up to 86 (prominence-weighted) against a character axis of 88. The right response to that gap is to dispute a row.

AziraphaleleadAltered9/9 attested traits kept100

Every attested trait is preserved, from his angelic role to the bookshop to the Arrangement with Crowley. The show's romantic framing of the two leads is an addition against the novel's silence, not a counted miss.

AppearanceA soft, fussy, immaculately old-fashioned Englishman-shaped angel with a fondness for tartan and bow tiesIn the Beginning; throughoutpreservedstrong
IdentityAn actual angel, formerly the guardian of Eden's Eastern Gate, who gave away his flaming sword to Adam and EveIn the Beginningpreservedstrong
Body / abilityPossesses angelic powers, including minor miracles and the ability to discorporate and recorporate, but is bureaucratically limited by Heaven's rulesthroughoutpreservedstrong
PersonalityFussy, book-hoarding, food-loving, and easily flustered, with a secret fondness for small earthly indulgencesthroughoutpreservedstrong
Moral codeNominally serves Heaven's side of Good but privately questions Armageddon and increasingly acts on personal conscience over direct ordersthroughoutpreservedstrong
RelationshipsMaintains a millennia-long, informal non-aggression pact, the Arrangement, with the demon CrowleyIn the Beginningpreservedstrong
Vocation / roleRuns an antiquarian bookshop in Soho and deliberately avoids ever selling a bookthroughoutpreservedstrong
ArcUltimately defies Heaven's demand to force Armageddon forward and helps stop the apocalypseSaturdaypreservedstrong
Plot functionIs discorporated and must return to Earth by possessing the psychic medium Madame Tracy's bodySaturdaypreservedstrong
IdentityThe novel never states or implies a romantic dimension to Aziraphale and Crowley's relationshipThe show builds a romantic arc across its three seasons, including a Season 2 kiss. Under the identity rule this is an addition against the novel's silence, not a violated trait. · unstated throughout the novelnot depictedstrong
CrowleyleadAltered8/9 attested traits kept89

Every attested trait is preserved except one: the show gives Crowley red hair where the novel gives dark hair.

AppearanceA demon in a human-passing form, with the novel describing him with dark hairThe show gives Crowley red hair where the novel gives dark hair. · In the Beginningalteredstrong
IdentityOriginally the serpent who tempted Eve in Eden; 'did not so much Fall as saunter vaguely downwards'In the Beginningpreservedstrong
Body / abilityDemonic powers, including miracles and ownership of a preternaturally reliable 1926 Bentley that never needs washingIn the Beginningpreservedstrong
PersonalityOutwardly cynical, fast-driving, modern in his speech and tastes, secretly sentimental about Aziraphale and about humanitythroughoutpreservedstrong
Moral codeNominally serves Hell but has never actually done much active evil, treating his demonic duties as a job rather than a callingthroughoutpreservedstrong
RelationshipsMaintains the millennia-long Arrangement with AziraphaleIn the Beginningpreservedstrong
Vocation / rolePoses as a nanny, 'Nanny Ashtoreth,' to the boy Hell believes is the AntichristEleven Years Agopreservedstrong
ArcUltimately defies Hell's demand to prevent Armageddon's cancellation and helps stop the apocalypseSaturdaypreservedstrong
Plot functionDrives frantically toward Tadfield through a ring of demonic fire on the M25 after believing Aziraphale destroyedFridaypreservedstrong
Adam YoungleadAltered9/9 attested traits kept100

Every attested trait is preserved, including the mechanics of his power and his rejection of Satan.

IdentityThe actual Antichrist, delivered to the wrong family through a hospital mix-up and raised without either side realizing itEleven Years Agopreservedstrong
AppearanceAn ordinary-looking English boy growing up in the village of TadfieldEleven Years Agopreservedstrong
Body / abilityPossesses a subconscious reality-warping power that grows stronger as Armageddon approachesThursdaypreservedstrong
PersonalityCurious, imaginative, a natural leader of his friend group, drawn to conspiracy magazines and adventureThursdaypreservedstrong
RelationshipsLeads a close-knit gang of friends, Pepper, Wensleydale, and Brian, known as the Them, and has a dogEleven Years Agopreservedstrong
Moral codeWhen confronted with his friends' horror at his emerging destructive power, chooses his own humanity and free will over his infernal natureSaturdaypreservedstrong
Vocation / roleAn ordinary schoolboy with no assigned role beyond the one thrust on him by his parentageEleven Years Agopreservedstrong
ArcRejects Satan's attempt to claim him and unmakes Armageddon on his own terms, then quietly edits everyone's memory of eventsSaturday; Sundaypreservedstrong
Plot functionDirectly confronts and defeats three of the Four Horsemen with his friends at the climaxSaturdaypreservedstrong
Anathema DevicesupportingAltered4/5 attested traits kept80

Her identity, her personality, her relationship with Newton, and her role as the prophecy-book researcher are all preserved. The raw tally, 4 of 5 traits preserved, is 80. The fifth trait, the unread second book, carries low confidence and leaves the arithmetic under v0.3-census, so she enters the character axis at 100.

IdentityA modern-day witch descended from Agnes Nutter, in possession of Agnes's book of propheciesWednesdaypreservedstrong
PersonalitySerious, practical, and environmentally conscious, with occult family hobbies like dowsingWednesday; Thursdaypreservedstrong
RelationshipsBegins a relationship with Newton Pulsifer, descendant of the witchfinder who burned Agnes NutterSundaypreservedstrong
Plot functionUses Agnes's prophecies to track the Antichrist and try to prevent ArmageddonWednesdaypreservedstrong
ArcAt the novel's end, receives a second book of Agnes's prophecies but chooses not to read it and burns it insteadNo live, reviewed source confirms this scene appears on screen in any season. · Sundayomittedthin
Newton PulsifersupportingAltered4/4 attested traits kept100

All four attested traits are preserved.

IdentityDescendant of the Witchfinder General who burned Agnes Nutter at the stakeWednesdaypreservedstrong
PersonalityCursed with an unexplained ability to break any computer or electronic device he touchesWednesdaypreservedstrong
Vocation / roleRecruited as the Witchfinder Army's sole private after answering Sergeant Shadwell's classified adWednesdaypreservedstrong
RelationshipsBegins a relationship with Anathema Device after being sent to investigate TadfieldSundaypreservedstrong
Sergeant ShadwellsupportingAltered3/4 attested traits kept75

His role, his personality, and his dependence on Madame Tracy are preserved. The one altered trait is the ending: the novel states a marriage, and the reviewed synopsis of the finale does not confirm one.

Vocation / roleSergeant of the Witchfinder Army, which in practice consists of only himself and his one recruitWednesdaypreservedstrong
PersonalityGruff, penny-pinching, and deeply suspicious of witches, subsisting on tea and condensed milkthroughoutpreservedstrong
RelationshipsLives above his neighbor and landlady, Madame Tracy, whom he berates as a 'jezebel' while depending on herthroughoutpreservedstrong
ArcBy the novel's end, marries Madame Tracy, effectively disbanding the two-man Witchfinder ArmyThe only reviewed synopsis of the finale confirms the two retire together and does not confirm a marriage. · Sundayalteredpartial
Madame TracysupportingAltered4/4 attested traits kept100

All four attested traits are preserved.

Vocation / roleA self-described psychic medium who also offers paid personal services, derided by Shadwell as a 'jezebel'Wednesdaypreservedstrong
PersonalityCheerful and warm, unbothered by Shadwell's insults and genuinely fond of himthroughoutpreservedstrong
Plot functionLends her body to the discorporated Aziraphale so he can return to Earth in time to stop ArmageddonSaturdaypreservedstrong
ArcEnds the story in a domestic partnership with Sergeant ShadwellSundaypreservedstrong
Agnes NuttersupportingAltered4/4 attested traits kept100

All four attested traits are preserved, including the mechanics of her engineered death, in the Episode 2 flashback.

IdentityA 17th-century Englishwoman and genuine prophetess, ancestor of Anathema DeviceWednesdaypreservedstrong
Vocation / roleA recognized witch in her village, publicly known for prophecy before her executionWednesdaypreservedstrong
Body / abilityHer written prophecies, collected as The Nice and Accurate Prophecies of Agnes Nutter, Witch, are always completely accurate, if often maddeningly crypticWednesdaypreservedstrong
Plot functionDeliberately arranges her own execution by packing gunpowder and nails into her clothes, killing the witchfinder and the mob that condemned herWednesdaypreservedstrong
The Four Horsemen (War, Famine, Pollution, Death)supportingAltered5/5 attested traits kept100

All five attested traits are preserved. The four are cast individually: Mireille Enos as War, Yusuf Gatewood as Famine, Lourdes Faberes as Pollution, and Brian Cox as Death.

IdentityFour ancient personifications who ride out when summoned to enact the biblical apocalypse: War, Famine, Pollution (having replaced Pestilence after the 1936 discovery of penicillin), and DeathThursdaypreservedstrong
Vocation / roleEach maintains a modern day job or guise: War as a war correspondent and arms-trade instigator, Famine as a diet-industry and fast-food tycoon, Pollution as a young drifting figureThursdaypreservedstrong
Body / abilityRide motorcycles as the modern equivalent of the biblical horses, each carrying or wielding an instrument of their officeThursdaypreservedstrong
Plot functionConverge on the Tadfield air base and attempt to trigger nuclear war by tampering with military computer systemsSaturdaypreservedstrong
ArcThree of the four, War, Famine, and Pollution, are defeated and dismissed by Adam's friends; Death alone departs undefeated, since Death cannot truly be destroyedSaturdaypreservedstrong
GabrielsupportingAddedn/a

A screen-only character with no counterpart in the novel, recorded as added and excluded from the character axis under the v0.3-census rule for screen-only people.

IdentityGabriel does not appear as a character in the 1990 novel; multiple reputable comparisons state he was created wholesale for the TV seriesGaiman has said he built the character partly from material the two authors had sketched for an unfinished print sequel. · novel, no equivalent characternot depictedstrong
Vocation / roleOn screen he is Aziraphale's direct superior, the archangel overseeing Heaven's side of ArmageddonThe novel names no superior for Aziraphale in this role. · novel, no equivalent characternot depictedstrong
RelationshipsSeason 2 gives him a secret romantic history with Beelzebub, Hell's rulerScreen-original. No published text contains an equivalent relationship. · novel, no equivalent characternot depictedstrong
The Other Four Horsemen (parody bikers)supportingOmitted0/3 attested traits kept0

Cut from the show entirely, for time and budget per reported comparisons. The row stays in the table at 0 as an omitted major.

IdentityA second group of apocalyptic bikers who adopt invented names like Grievous Bodily Harm and Cruelty to Animals, following in the real Horsemen's wake as a parody quartetThursdayomittedstrong
Vocation / roleOrdinary Hell's Angels-style bikers who take on invented apocalyptic-sounding names for the occasionThursdayomittedstrong
Plot functionProvide a comic subplot pursuing the real Four Horsemen toward the air baseThursdayomittedstrong

Creator stance

Time-stamped. Co-creators are never collapsed.
Terry Pratchett
co-author of the novel
2014 (pre-production, via a posthumous letter)
Championed
In a 2014 letter written after his Alzheimer's diagnosis, Pratchett told Gaiman he had to make a screen adaptation himself, saying Gaiman was the only person who shared his own care and passion for the book, so he wanted to see it before, in his words, the lights went out.
Statement made before any production existed and before Pratchett's 2015 death; quoted publicly by Gaiman afterward. This is a pre-production stance on the adaptation being made at all, not a review of the finished result.
About:fidelityqualitysource ↗
Neil Gaiman
co-author of the novel; creator, showrunner, and lead writer of the TV series (Seasons 1-2; partial writer, Season 3)
2018-2019
Participating adapter
Gaiman has described weighing every cut scene against what Pratchett would have wanted, saying that when a scene was distinctively Terry's, he kept it in even where the runtime was tight, and that he made the whole project because his late friend asked him to.
About:fidelitysource ↗
Neil Gaiman
credited writer, Season 3 finale (contribution made before departure)
2024-2026
Silent
Following public allegations of sexual assault in 2024, which he has denied, Gaiman stepped back from production; his executive producer credit was removed for Season 3, though some of his earlier writing contribution to the finale's storyline was reportedly retained.
A production and credit change, not a public creative stance on the finished season; he has not spoken publicly about the finale's fidelity to his and Pratchett's original plans.
About:ownershipsource ↗
Rob Wilkins
Terry Pratchett's former personal assistant, now head of the Pratchett literary estate; executive producer
2023
Championed
Wilkins has said Pratchett would have been fully open to changes like the show's more diverse casting, recalling Pratchett's own comment that he would write a character differently today, and has described the estate's decisions on the adaptation as effectively trusting Gaiman's judgment.
About:fidelityownershipsource ↗
Douglas Mackinnon
director (Season 1, all six episodes; Season 3)
2019
Participating adapter
Mackinnon has said he approached the two authors' contributions to the novel as a single, unified text rather than trying to separate out who wrote which part, and described the production as prioritizing fidelity to the book alongside Gaiman's vision for the screen.
About:fidelitysource ↗

No other adaptation of this source is catalogued.

Sources

Every score note points here. Wikipedia is a lead, not an authority.

Record good-omens-novel-to-amazon · schema 0.2 · scoring 0.3-census · completeness census. Fidelity is not quality; the score is not a review.