Tom

Continuity mistake: After having shot Bo with a stolen crossbow, Carly and Nick search the Sinclair house for help. When Carly comes across a drawer filled with newspaper clippings and childhood photographs of the Sinclair brothers, Bo and Vincent are seen on these photos as having very fair, almost light brown hair, and yet in the film, the adult brothers both have very dark black hair. It is possible that they could have dyed it in the past, but considering one is a deranged psychopathic killer and the other his simple-minded disfigured sidekick, this seems very unlikely (admittedly, hair color can grow darker over the years, but not the the extent of changing color completely, and the photos of Bo and Vincent show them around 5 or 6 years old, not toddlers). (01:23:15)

Tom

Continuity mistake: After Vincent has stabbed Blake in the neck at the campsite, a terrified Paige runs for her life and tries to hide in a large dark building (the abandoned sugar mill). Whilst she is running through dark hallways, she passes through patches of moonlight and we see that her eyes are dry, and her face doesn't exactly show an expression of terror (Hilton's poor acting perhaps?). However, seconds later, she crouches down to hide and the lights are turned on, and we see that she is crying and tears are streamed across her face, yet she was not sobbing nor crying before she crouched down, merely screaming and panting. Immediately afterwards, when she is searching through a box of discarded cellphones, her face is once again dry and her eyes not red, and it remains dry throughout the rest of the scene, despite her not having wiped her face at all (including the scene of her face right before Vincent impales her: her mascara is completely untouched). (01:11:20 - 01:11:50)

Tom