Child's Play (1988)

When serial killer Charles Lee Ray is mortally wounded in a police shoot-out, he uses a voodoo spell to transfer his soul into Chucky, a Good Guys doll. Andy receives the doll as a birthday gift, and Chucky soon resumes his killing spree. However, Charles doesn't want to be trapped in the body of a doll forever. His only escape would be to transfer into the first human he revealed his true identity to... which places Andy in mortal danger.