Audio problem: Sean drops frozen Jenna and she shatters. He then manages to casually walk out of the room over her without crunching any of the ice.

Audio problem: While Sean and Whitney are tossing the football at the lake edge, at one point we hear Whitney catch the ball offscreen while the camera is on Sean. The camera then cuts back to Whitney and he catches the ball on screen.

Continuity: At the party, Chloe's hands jump from extended to the fire to clutched in front of her as Sean approaches.

Audio problem: When Sean flags down Whitney's truck, we hear his brakes squeal as he slams on the pedal. A few quick cuts later we see him do the same thing, apparently for the first time.

Plot hole: Chloe writes her phone number on Sean's hand. It disappears when we see him struggling against the ice of the lake, then reappears in the scene where he is calling old girlfriends. And how exactly would pen ink survive several hours submerged in water and then another eight hours of normal activity without becoming blurred?

Continuity: When Sean emerges from the lake and goes to the campfire, his clothes are completely dry despite the fact that he was totally underwater for hours.

Continuity: When Sean is in the nurses office, having his temperature taken, the light on his left side is on. After the nurse wants to retake the temperature the light is now off.

Continuity: As Sean sucks electricity at the power station, his arms are bent in the first shot and fully extended in the next.