Continuity mistake: When Rigg is watching the tapes of Jill's interview he picks up a guide to civil engineering book. Camera does an instant cut and now he's got a police file in his hand. (00:15:30)
Saw IV (2007)
1 picture
Directed by: Darren Lynn Bousman
Starring: Tobin Bell, Betsy Russell, Costas Mandylor, Scott Gordon-Patterson, Scott Patterson
Continuity mistake: The blood stain on Riggs' white shirt around the neck has blood under the collar, then at the end it is over the collar and has increased in amount.
Agent Strahm: We're here to find the person helping Jigsaw and Amanda Young.
Trivia: When Officer Rigg is walking through the school, before he finds Morgan and Rex in the rod trap, he walks by a dark room blocked off with police-barrier-tape. Originally, there was a scene that revealed this was the room where Troy from "Saw III" died, but it was cut, presumably for pacing reasons.
Question: A glass casket with a key inside it is shown in John's warehouse. What does that mean?
Answer: This was revealed by director Darren Bousman to have originally been used in a now-deleted (and not released as of Oct. 2020) scene in the movie. The glass box is used for what is (most likely) a different purpose in Saw V.
Answer: It plays an important role in the next few movies.