It is like a Michael Haneke film but without the intellectual underpinnings and is therefore just pointlessly plain and, in one long scene of torture, unwatchably sadistic.

Unscary, uninteresting tosh from people who should know better.

Has quite a bit going for it, which makes its eventual reliance on inane genre gimmicks that much more disappointing.

A solid little holiday chiller that's carried by some effective camerawork and a powerhouse lead performance from Rachel Nichols.