Stine R.L. Night of the Living Dummy

Scholastic, 1992. — 195 p. — (Goosebumps 07).Amy's ventriloquist dummy, Dennis, keeps losing his head... for real. So Amy begs her family for a new dummy. That's when her dad finds Slappy in a local pawnshop. Slappy's kind of ugly, but Amy's having fun practicing her new routine. Then horrible, nasty things start happening. Because there's something odd about Slappy. Something evil.