worst parents ever *SPOILERS*
i mean, seriously... your kids are sociopaths, and you teach them to pick locks? they start killing the family pets and you keep leaving them around the rest of the family pets??? you break every professional code of conduct there is and diagnosis your child instead of taking them to unbiased trained professionals? they beat you with baseball bats and you don't beat the ever living $h1t out of them when you get untied???
sorry, but those parents deserved what they got at the end. this movie wouldn't have lasted 5 minutes for me-- after they threw the rock at my husband's head, those kids would of had the devil beaten out of them-- forget the lame exorcism.