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 - chronological order
Directed by: Sally Mattison
Starring: Brittain Frye, Hope Marie Carlton, Michael Harris, Brandi Burkett, David Greenlee, Keely Christian, Maria Claire
Genres: Horror
Continuity mistake: When Maria is cleaning up the water on the floor, the rag is red in one shot and then blue in the next.
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