Continuity mistake: After the hitch-hiker smears blood from his hand all over the side of the teenagers van, in the very next shot as we see the van riding away down the road, the blood has disappeared from the side. (00:16:40)
Continuity mistake: When evil Swan hands the contract to the Swan who's about to kill himself, Swan grabs the contract out of E.S hands, yet in the next shot, E.S is still holding it.
Continuity mistake: When the boy stabs the man in the back with an ax while they're chopping firewood, the position of the ax changes between shots. In the first shot, the ax is vertical because the boy is behind the man. In the next shot, the ax is horizontal as if the boy is on the right side. (01:06:53)