Bride of the Gorilla

From Wikipedia:
Bride of the Gorilla is a 1951 B-movie film directed by Curt Siodmak and starring Raymond Burr, Lon Chaney Jr. and Barbara Payton. The pre-release working title was The Face in the Water.

Deep in the South American jungles, plantation manager Barney Chavez (Raymond Burr) kills his elderly employer in order to get to his beautiful wife Dina Van Gleder (Barbara Payton). However, an old native witch witnesses the crime and puts a curse on Barney, who soon after finds himself turning nightly into a rampaging gorilla. When a wise but superstitious police commissioner Taro (Lon Chaney Jr.) is brought in to investigate the plantation owners death and a rash of strange animal killings, he begins to suspect that all is not as it seems. Dina is also becoming suspicious with Barney, who is seeming to grow more in love with the jungle than with her. She follows him one night into the jungle, only to be attacked by the feral Barney. The police chief follows her screams in the jungle and shoots Monkey-Barney, the jungles justice having been dealt.