Santo fights diamond smugglers.
El Santo
as Santo
Fernando Osés
as Diamond Buyer
Frank Braña
as Julio
María Eugenia San Martín
as Wu-Li
Antonio Pica
as Andres Cortez
Guillermo Galvez
as Che Davila
Mara Cruz
as Andres' Girlfriend
Juan Garza
as Henchman
Carlos Suárez
as Police official in Puerto Rico