Visible crew/equipment: When Samanth is pretending to hid underwater until Sarah agrees to go swimmming, when Sarah is searching for Samantha, is shows a shot of Samantha coming from underneath the docks. When she does, you can see it is a dummy coming from underneath the docks.

Continuity: When the paramedics are rolling Jason, his feet are not facing them, but when they come into the room with Axel, Jason has switched positions.

Revealing: Trish tells Tommy to go get a hammer and some nails. When Trish then shouts "Tommy, hurry" you can see the shelf to her right get bumped by somebody in the crew, who was obviously standing nearby.

Continuity: As Jason breaks into Tommy's room, a purple monster mask on Tommy's wall starts to spin, then stops a few shots later, then starts spinning again in the next shot.

Revealing: Near the end when Jason throws the hammer at the girl, it sticks to the damaged part of the wall after it hits. But it's just against the wood with the flat top, there's nothing to hold the hammer there and it's only hit the wood on the other side of the wall. They probably used a magnet to attract and keep it there for safety reasons.