Other: When Zeke hands Mary-Beth the drug, when she takes the drug from him the lid is not on yet in the next shot the lid is on.

Continuity: When Stokeley and Casey are chased into the swimming pool area, the alien pulls Stokeley to the floor. You can see a trail of blood from her mouth, then in the next shot the blood has changed into a small neat circle.

Continuity: After Delilah refuses to take the drugs at Zeke's house and runs through the wall, Stokely's sweater keeps changing positions in and out of the house in different perspectives of the camera takes.

Continuity: when you first see Delilah she at the start she puts her hair behind her ears. When the camera angle changes her hair is in front of her ear again.

Continuity: Towards the end of the film, the students gather around the fish tank in the classroom. In the close-up scene the tank is brim full (the students actually touch the water when they lean on the tank). However, in the long shot, the tank is only half full.