Visible crew/equipment: The boom mike is visible when Sally sings her "Pie in the Sky" song and when Courtney and Sally are standing in the bathroom, before Sally's face explodes.

Continuity: In the first Slumber Party Massacre, Trish has the last name Devereaux. In this movie, Courtney refers to her as Trish Craven.

Continuity: While the girl was in the bath, she got electrocuted, and the plug "fried" and turned black, and part of it even got melted. When the other girl comes in later, the plug is now new and intact.

Continuity: After the murder with the yard sign, the killer puts the sign back into the yard, with no blood on it.

Deliberate "mistake": When the blonde girl is doing a strip tease, she has long hair which reaches far down her back. However when they show a flash shot of her breast as she spins, her hair is only to her neck. Obviously a double.

Visible crew/equipment: When one of the girls is killed in the kitchen and is out of the shot you see blood splatter on the wall. If you look at the bottom of the shot you can see the shadow of a hand tossing the blood at the wall.