A surgeon transplants the heart of an ape into his ailing son with horrific results.
José Elías Moreno | Dr. Krallman | |
Carlos López Moctezuma | Goyo | |
Armando Silvestre | Lt. Arturo Martinez | |
Norma Lazareno | Lucy Ossorio | |
Agustín Martínez Solares | Julio Krallman | |
Gerardo Zepeda | Monstruo |
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