Night of the Bloody Apes (1969)

A doctor tries to save his son's life through a complicated heart transplant operation, the involuntary donor being a gorilla. Eventually, the young man turns into a violent hybrid beast.

Director: René Cardona

Cast: José Elías Moreno, Carlos López Moctezuma, Armando Silvestre, Norma Lazareno, Agustín Martínez Solares, Javier Rizo, Gerardo Zepeda, Noelia Noel, Gina Morett, Francisco Beal, Carlos Bravo y Fernández, Laura Cannon, René Cardona III, Martha Covarrubias, Roy De La Serna, Manuel de la Vega, Gustavo del Castillo, Xochitl del Rosario