Something about the trivia!
This is the very first paragraph in the Triviva section of this film:
20th Century Fox originally hired Terence Rattigan to write the screenplay based on the book by Gerold Frank, but he wrote it as a comedy and was replaced by Edward Anhalt. In Rattigan's version, the killer was revealed, by a computer, to be Darryl F. Zanuck.
It's the most hilarious thing I've read all month! It just sounds so absurd that I find it hard to be true. Has anyone ever heard/read about this from another source or did the guy who added it to the trivia just make an ingenious joke?