Continuity mistake: When Eliot Ness is at Jim Malone's house for the first time, Malone's collar is opened, then buttoned, then open again.

The Untouchables (1987)
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Directed by: Brian De Palma
Starring: Robert De Niro, Kevin Costner, Sean Connery, Andy Garcia
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Elliot Ness: I have one more thing to say. I know that many of you take a drink. What you've done before today is not my concern. But now we must be pure and I want you to stop. It's not a question of whether or not it's a harmless drink, it may very well be, but it's against the law, gentlemen, and as we are going to enforce the law, we must do first by example.
Question: In the scene where Malone is shot by Nitti, he crawls to a room and when Ness comes in he finally gets Ness to see the paper about the man coming into the train station. If that information was so vital why was he just roaming around his apartment instead of going to Ness to show him?





Answer: Ness was coming to Malone's apartment to discuss the information with him there, Nitti and his men just got there first.
Captain Defenestrator