We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
This is a fiction/fan codex: entries describe an in-universe canon. Our audits check canon and internal consistency — external fact-checking does not apply the way it does on real-subject codexes.
Last full accuracy audit: 2026-08-15 · 30 entries checked · 14 flagged · 24 issues confirmed · 14 corrected · 10 still open
Holly Gennaro McClane — The domestic box office gross was approximately $83 million, not $140.8 million (which is closer to the worldwide total).
Holly Gennaro McClane — In the finale, John McClane shoots Hans Gruber who then falls after losing his grip while grabbing Holly's watch; he is not shot directly 'out' of the window.
Captain Sutherland — The entry contradicts itself by stating 'Captain Sutherland' does not exist while describing the character, which is a factual error as no such character exists in the Die Hard canon.
US Air Force — The entry conflates the Department of the Air Force budget ($217.5 billion) with the US Air Force service-specific budget, which is lower (approx $188 billion), as the figure includes the Space Force.
Cyber Terrorists — The film's plot is based on the 1997 Wired magazine article 'A Farewell to Arms' by John Carlin.
Cyber Terrorists — Mai Linh, Gabriel's second-in-command, dies when she crashes her vehicle into a concrete pillar inside the NSA facility after a struggle with McClane.
Hans Gruber — The entry incorrectly claims the scene where Gruber pretends to be an escaped hostage using an American accent was written before production began due to prior awareness of Rickman's ability; it was actually added after casting/auditions revealed this skill.
Hans Gruber — The entry incorrectly attributes the confirmation of Alan Rickman's genuine fear during his death fall to visual effects supervisor Richard Edlund, rather than director John McTiernan or stunt coordinator Charlie Picerni.
Holly Gennaro — The entry states that Gruber infers her relationship with John after seeing a photo of her and John together on her desk. In the film, Gruber discovers the relationship by looking at her wedding ring and noticing the name 'John' on it, not from a photo on her
Holly Gennaro — The entry states that during the final rooftop struggle, Holly stabs Gruber's foot with her earring. In the film, she stabs Gruber in the foot with a pen (or a similar sharp object), not an earring.
Al Powell — Entry states Powell identifies McClane by name from the start of exchanges, but in canon Powell learns McClane's name during their first radio conversation.
Al Powell — Entry claims Karl Vreski uses an MP5A3 with a stock, but film footage shows he uses an MP5K without a stock.
John McClane — In Die Hard with a Vengeance, McClane kills Simon Gruber by shooting a power line that collapses into the blades of his helicopter.
John McClane — In Die Hard 2, he transfers to the LAPD as a lieutenant but dislikes the spotlight.
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