When Santo accompanies a troupe of archaeologists in the search for Aztec artifacts, they find the Mummy of an Aztec who leaves a warning to those who tamper with his resting place. The adventurers ignore the warning, and before long, the Mummy starts bumping them off one-by-one with his bow & arrow.
Santo
Sergio Morales
Susana
Prof. Romero
Prof. Jiménez
Chief Guide
Plácido (as Tío Plácido)
Rosa Bermúdez
Agapito (as Niño Jorgito)
Announcer
Porter (uncredited)
Old Indian (uncredited)