Continuity: In the scene right after Shelly's funeral when Kate and 'Adam' are talking by his car, he goes to kiss her when they are done. He tries to kiss her on the lips, but she moves to the side. At first he is kissing her on the left cheek and when the camera changes positions, he is kissing her on her right cheek.

Continuity: Shelly stabs the killer in the leg with the scalpel. But when we see the killer following her, he seems unhurt and there is no blood or anything.

Continuity: In the scene where Dorothy is letting Campbell live in her home. He picks up his bag and puts it on his shoulder. Then the next scene when he leans in to kiss her, there is no strap on his shoulder. Then it's back again in the next shot.

Continuity: When Paige is in the hot tube, minutes before her death, you can see the killer looking at her. There is a noise, and she looks back for a few short seconds but there has already been a rose placed there for her BEFORE she turns around to see what the noise is, she just doesn't notice it until she turns back around.