Wrestler vs mad-scientist with werewolf serum.
Cast:
Blue Demon, Jaime Fernández, Nathanael León, Mario Orea, Fernando Osés
Production:
Filmica Vergara S.A.
Blue Demon (as Blue Demon)
Prof. Lauro Carral
Wrestler (as Nathanael León Moreno)
Dr. Gruber
El Sanguinario
Inspector
Marina Gruber
Waitress
Prof. Rafael
Ursus (as Guillermo Hernández 'Lobo Negro')
Woman in Forest (as Ivonne Gobea)
Man in Forest
Wrestler
Wrestler (as Pilusso)
Matías
