Dr. Frankenstein and her assistant, Dr. Yanco, are going to bring one of their experiments to life in Santo Vs. Frankenstein's Daughter. She intends to use a monster named Ursus to do her evil bidding. Using a youth serum to retain their vitality, the doctors set their sights upon none other than El Santo. They need his super human blood to regenerate a stronger youth serum. They kidnap Santo's goddaughter, Norma and lure him into Dr. Frankenstein's lab where he is captured and enslaved. Will Santo make it out alive?
El Santo
Santo
Gina Romand
Dr. Freda Frankenstein
Anel
Norma
Roberto Cañedo
Dr. Yanco
Sonia Fuentes
Elsa
Carlos Suárez
Tuerto
Gerardo Zepeda
Ursus / Truxon
Carlos Agostí
Don Elias
