Tales from the Crypt (1989)

S5E2 Food for Thought

Zambini, a psychic performer at the circus, wields mind control over his stunning assistant. When he discovers her infatuation with the fire eater, he is consumed by rage and murders him. Terrified, Connie escapes and never looks back. Desperate to reclaim her, Zambini attempts to summon her using his powers, but instead, he inadvertently reaches out to his pet gorilla.