Swamp of the Lost Monster 1957
A disappearing body leads a detective and his sidekick into an encounter with a gill man.
- Released: 1957-09-05
- Runtime: 80 minutes
- Genre: Western, Horror, Mystery
- Stars: Gastón Santos, Pedro de Aguillón, Manuel Dondé, Manola Saavedra, Rayo de Plata, Sara Cabrera
- Director: Rafael Baledón