Continuity mistake: Billy Taggart gets invited to Mayor Hostetler's office. You see as soon as they sit down that there is a grey/black blanket with a pattern next to Russell Crowe. From this point the blanket changes in shape each time. And suddenly after a couple times back and forth shots between them, the blanket is beige/white. Than finally they switch again and it becomes the first blanket again. (00:18:40 - 00:20:10)
Character mistake: In the scene where Billy is called to the crime scene of Andrews' murder, Andrews' body is shown with a wound on his chest. Later in the movie though, Billy is questioning Todd Lancaster. Todd Lancaster says that he saw Andrews get shot in the head. (00:52:00 - 01:25:00)
Continuity mistake: After leaving the movie theater upset, Billy jumps off the wagon going on a Meatloaf-sized booze-bender getting really drunk and obnoxious to anyone he encounters on the street. A little later he stumbles upon the crime scene and is suddenly stone cold sober.
Character mistake: Taggart places the incriminating contract that Hostetler signed, face up on the copy / fax machine. In order to get the image to transfer it has to be face down.