Mil Mascaras investigates a nest of fifth-columnists operating out of a carnival (!) led by a Nazi (John Carradine) attempting to resurrect the Third Reich posing as a circus clown .
as Mil Máscaras
as Sandra / Tamara
as Estrella
as Señor Robles
as Sandokan
as Mad Doctor / Nazi Leader
as Renzo
as Hercules (as Frankenstein)
as Commander (uncredited)
as Circus Man (uncredited)
