Revealing mistake: Ken is killing Diane by stabbing her with the knife. You can see that Ken is only stabbing the floor next to her.
Revealing mistake: Diane has a bloody wound on her left hip, before the killer actually cuts her with the drill.
Slumber Party Massacre III (1990)
2 revealing mistakes
Directed by: Sally Mattison
Starring: Brittain Frye, Hope Marie Carlton, Michael Harris, Brandi Burkett, David Greenlee, Keely Christian, Maria Claire
Genres: Horror
Continuity mistake: At the beginning of the film the teenagers are playing volleyball, Sarah has shorts on. Then she has on only a bikini bottom. Then she has shorts on. Then she has the shorts in her hands and picks them up. Later, Jackie and Diane are talking and in the background, Sarah has her shorts back on.
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