Roberto G. Rivera

Four men are cursed by a voodoo priest for stealing a sacred idol from his temple. Soon a band of murderous "doll men" are after the men and their families. (imdb)

In this adventure, Santo is a scientist who has funded his research with his victories on the ring. With the aid of his friend, Dr. Sepúlveda, he has created a Time machine that allows the user to "experience" the life of an ancestor. Santo's girlfriend Luisa, daughter of Dr. Sepúlveda, decides to test the machine and she is sent back in time to Colonial times, where her ancestor was the victim of Count Drácula and she discovers where he buried his treasure. (imdb)

A scientist discovers a formula that makes him invisible. (imdb)