Continuity mistake: When Mason throws the money at Marty's car, some bills are on the roof. Later there're no bills on the roof, but then in the next shot of the roof, there's a bill back on it.
Continuity mistake: Upon breaking in to the funeral home, Ruth and her father spray paint over the cameras. However they miss one when the open up the casket room, right above the right corner of the door. After searching the caskets, the camera mysteriously vanishes. (00:51:52 - 00:53:00)