Continuity mistake: When Kim is being chased through the woods by the attacker, she finally notices a shelter in the distance and runs towards it. As she stops in a clearing closeby, she is suddenly faced by the attacker who stabs her in the stomach with a machete. In the shot her right backpack strap has fallen off of her shoulder and is down to her elbow. But in the next shot of her falling backwards to the floor, the strap is suddenly back on her shoulder. (00:25:20)
Continuity mistake: Svenja goes back to ride down the flume again on her own, after she has already rode down it. When she rode down it the first time, she lands in the pool and her hair becomes completely wet. But when she goes back up to slide down again, in a matter of seconds when she reaches the top of the flume, her hair is all dry and straightened. (00:40:50 - 00:42:20)
Continuity mistake: When Sarah ends up hitting Chris on the nose to stop him from throwing her in the pool, in the following scene where everyone is trying to find out what happened, there is a spot of blood on Chris' cheek which keeps disappearing then returning. (00:38:10)
Continuity mistake: In the scene with the Sheriff entering the room to talk to the officer, the officer is crouched down beside a dead body covered in a white sheet. In the very first wide shot of the officer kneeled down beside the body - notice that there is an arm stuck out from under the sheet. There is nothing around the hand of this dead body. But in the next shot the hand is resting in a thick pool of blood. (00:30:25)
Continuity mistake: Martin has snuck into the swimming pool waiting for the security guard to leave; when the guard does leave, watch the items on the coatstand he walks past before he leaves the shot. When Martin sneaks into the same area and passes the same stand, the items on it are arranged differently. (00:22:00 - 00:22:50)
Continuity mistake: When Sarah and Gregor are laying in bed with each other, talking, Sarah is laying with her head on Gregor's chest. Between shots during the scene, the way in which Sarah is positioned and the angle of her head on his chest continually changes. (00:18:55)
Continuity mistake: When all the students are racing down the streets of Germany in four separate cars, they approach some traffic lights and all slow down. Carmen and Mel (in the same car) slow down in a closeup and behind them, in this shot we can see another vehicle stop behind them with its lights on. But in the next closeup as she is asking Frank to throw her some beers over, there is no visible vehicle behind her at all. (00:29:15)
Continuity mistake: When Sarah goes round to Carmen's house, she rings the doorbell. In the first wide shot, there are some leaves growing around the wall near the doorbell; but in the next closeup of Sarah ringing the bell again, suddenly there are alot more leaves surrounding the doorbell. (00:15:55)
Continuity mistake: In the scenes with everybody outside the front of the school after the exam finals, Frank reveals his t-shirt with an obscene slogan on it. During this scene; watch Carmen behind Frank - she lights her cigarette up twice between shots. (00:13:15)
Continuity mistake: When all the students are outside after they have finished their finals, Mike goes to talk to Kim, and she shouts at him that she failed her exam. Watch the bottle of beer sitting on the car behind Mike; it rotates between shots during the scene. (00:12:00)
Continuity mistake: When the woman is being chased in the opening sequence, the attacker chasing her is carrying a machete in his right hand. But in one shot as they turn down the long hallway that leads to the swimming pool, the attackers hands are empty (no machete) but in the next shot it's back in his hand. (00:06:35)
Continuity mistake: In the opening scene, the woman runs upstairs to grab the rifle, but first she catches her breath at the desk. In this scene, the items on the desk (from when she stands beside it, to when she gets the rifle) change position and some items vanish too. (00:04:35)
Continuity mistake: At the beginning of the movie when the woman is preparing the salad in the kitchen, between shots the salad tongs sitting inside the bowl move themselves. (00:01:45)
Continuity mistake: In the beginning sequence when the woman runs upstairs to get the rifle, as she runs to the desk and in the following shots, the wet strands of her fringe hanging on her forehead constantly change position. (00:04:20)
Continuity mistake: When the woman runs downstairs to the front door in the opening scene, she has a belt of ammunition over her left shoulder. In one shot she pulls the belt back over her shoulder so that the top (where the bullets begin) goes back behind her shoulder. But in the next shot it is back to the original position before she moved it. (00:05:45)
