When Orville uses the police officer's revolver, he fires ten shots.
When the basement door creaks open as Janie approaches sipping tequila, it is apparent that there is no locking mechanism, simply solid wood. Earlier they have to unlock the door.
After the blood from the dead bodies has dripped over Linda's face, the pattern and amount of blood on her face differs throughout the film.
When the girls find the doll in the cellar, its position in the box changes, before they reach down and pick it up.
When the detectives talk to Candy, Satana is doing a strip show. She takes off her bikini top. Later, when the detectives leave, you can see Satana's reflection in a mirror and she has the bikini top on again.
Camera shadows in some scenes.
(around 56 min.) The cameraman's silhouette can be seen.
When the sorority girls first enter the living room at the beginning, a shadow of a boom mic is clearly visible above the fireplace.