Continuity mistake: In the scene where Cynthia agrees to marry Oz, you can see her hair change position in between the shots. (01:30:45)
Revealing mistake: When one of the civil cops knocks at Jimmy's door it is obvious that someone behind it (from the movie crew) opens it. He doesn't knock hard enough to make the door slide open by itself. (01:47:45)
Factual error: When Sophie hires another contract killer, they are having sex at Niagara Falls. It seems that a few hours later they have driven to Montreal, which is almost 7 hours away. The movie implies a very short distance between Niagara Falls and Montreal.
