 Simpson described the "threat" in the film as "ill-defined", a serious flaw for any horror film.He wrote that none of the film's characters have a clear motivation for their actions.As examples, Simpson gave the lack of any logical reason why a husband and wife expecting their first child together would decide that the middle of winter would be a good time to move to an "isolated 17th century farmhouse 20 miles from the nearest town which has no telephone connection and no mobile signal"; why two adult men would decide to camp together in a wood in the middle of nowhere; why one would become so immediately enamored by a total stranger that he would follow her into the woods for a tryst; or why, after that friend is horribly maimed, the second man would abandon him and hike away with that same woman looking for help.