The film was shot in sequence.

Coogan's prison number, as shown in the dossier before he was kidnapped, was B-33920. This is actually the prison number of Charles Manson while he was incarcerated in California.

Except at the conclusion when John Terry is revealed as the antagonist, The Shooter was played by a body double and the actor's voice was overdubbed in post production . The double was played by Jeremy Dean Turner, who was uncredited.

Mrs Chan was kidnapped because she made a mistake as a 60 woman with bad eye sight. Compared to what all the others did to put Greeley in jail this seems like an overkill punishment for a simple mistake.