Revealing mistake: When the hiker's body is taken out of the cottage, it is so obviously a dummy - you can see the join in the neck.
Continuity mistake: When Ricky is in bed talking to Bella, the blanket is covering only half the hot water bottle. In a later shot, it's covering most of the hot water bottle. It then goes back to only covering half of the water bottle. (00:16:30 - 00:17:05)
Continuity mistake: When Bells is plucking the hair out of the animal, she shows Ricky how to do it. She then puts another animal on the table and tells Ricky to give it a go. The animal is belly down, chin resting on the table. The camera changes shots after Ricky's reaction, and the animal is now on its back. (00:13:10)
Continuity mistake: When Ricky is found after running away, he sits up and unzips his hood and pulls it down. The position of the hood changes multiple times from shot to shot even though he doesn't move and his hands are down to his sides. He also transitions from sitting to leaning on his side from one camera shot to the next. (00:09:10 - 00:09:40)
