Continuity mistake: When Dave and Vince arrive at the scene of the first Trouble, Dave is talking to Duke, and the camera changes from in front of Dave to just behind him. Dave wears glasses and in the front shot he has them on, but in the rear shot, they're missing.
Continuity mistake: When the taxi stops to pick up the woman, it stops with its hood in front of the door of the building beside it. She gets in and finds the driver dead, and jumps out. When the police are checking it, it has moved a full car length forward. The driver put it in park when he stopped, so it didn't roll forward.