Pointless motive on why the bad person was the bad person. No one believed the girl. The police, her friends, and principal all were jerks. I agree with the other user reviewer about the wooden cop actor, but at least he ended up not being an idiot. Typical stupid ending. Clobbered in the head with a wine bottle and having basically no ill effects. A real wine bottle that would shatter against a skull would be 100% lethal. The corkscrew was somewhat witty ala Emily Blunt in The Girl on the Train.
Entertaining but try to ignore the many dumb parts.