Who's Been Sleeping in My Grave? (Ghosts of Fear Street #2) by RL Stine

The ghosts of Fear Street -- they'll haunt you forever!

Do you believe in ghosts? Don't say no until you take a walk down Fear Street. Pat the woods -- where no birds sing. Past the lake -- where something lurks beneath the water. Past the cemetery -- where everyone is dying to meet you.

And don't forget to stop by the Shadyside Middle School. Zack Pepper thinks there is something very wrong with his substitute teacher. No one will believe him, so he has to get rid of her all by himself. But how can he destroy someone who is already dead?