During the opening sequence, the get-away car hits a deer, smashing the windshield and covering it with blood. In the following shots showing the car careening out of control, the windshield is intact with no damage.
At Bobby's hunting cabin, when Addison listens to Liza's voicemail he has one stream of blood running down his forehead. When he turns around to write down an address, he has an extra stream of blood running down his cheek. And when he turns back around the stream is gone.
While the movie is supposedly set in Michigan around Detroit, an early scene show's a Dunn's Delicatessen and the Dominion Square Tavern, both recognizable landmarks on Metcalfe Street in Downtown Montreal.