When Litner escapes on the snowmobile, his appearance changes from shot to shot, as in some he is wearing goggles and a hood and in others he is bare headed.
In the snowmobile chase, Littner gets a head start and reaches a point in the trees, but Max takes time getting on his snowmobile and starting it up, yet by the time he gives chase Littner is still in the same spot fleeing.
When Herb is carrying in wood for the fire, he begins to enter the room with wood in his right arm and when he turns to close the door, the wood is in his left arm.
When Ken Spool is talking with Quincy about hunting, the boom mic. casts a shadow across Ken's right shoulder.
During the snowmobile chase, the engine noise from the helicopter carrying the overhead camera can be heard along with the snowmobile engines.
It is discovered that the killer has put poison on some of the firewood which released deadly smoke when burnt - yet later a character goes to collect more firewood from the storage place where the previous wood was brought from (which therefore could equally be poisoned) instead of chopping new wood.