Revealing mistake: When Bobby's wife is dragged to her knees by the chain, you can make out the shape of her knee pads under her trousers. (00:41:10)
Continuity mistake: At the airport, Sarah says "She has a camera in her purse, we have to kill her?" As soon as the camera stops panning around, Marvin is visible in the far background holding the pig teddy with the pig's legs facing the two. The shot then cuts to a close-up of Marvin. In this close-up, the pig teddy's legs are now facing the opposite direction. (00:37:00)