Color, 1973, 91 mins. 35 secs. / 89 mins. 19 secs.
Directed by Carlos Aured
Starring Paul Naschy, Jack Taylor, María Silva, Helga Liné, Luis Davila, Rina Ottolina
Scorpion Releasing (Blu-ray) (US R0 HD), Vellavision, Llamentol (DVD) (Spain R2 PAL) / WS (2.35:1) (16:9)