Continuity mistake: When they're travelling in the coach, wideshots of them driving show them driving through deserted countryside. But in shots from inside the coach you can see the roofs of houses and telephone poles passing by.
Continuity mistake: In the close-ups of the scene near the very end of the film when the three girls and the guy get in the boat, there is no rain. On the wide shot, it is very badly raining and rain can be seen coming down as well as hitting the water. But as the shot reverts back to the boat, there is no rain to be seen.
Continuity mistake: In the scene after the tooth is discovered in the pie, Harris pours himself water twice. He grabs the glass when Maggie says, "Everyone calm down", then again when she says, "Jill, come with me".
Continuity mistake: Harris gets his leg caught in the bear trap, it is his Left leg that is caught and chopped off, then in the scene where Harris has just been killed, the leg shown that has been chopped off is his Right leg.
