A serpent, created by radioactivity, threatens a Spanish coastal town.
Timothy Bottoms
Pedro Fontán
Taryn Power
Margaret
Jared Martin
First Mate Lemaris
Ray Milland
Professor Timothy Wallace
Gérard Tichy
Carole James
Jill
Jack Taylor
Hospital Killer
León Klimovsky
Dr. Moore
Charly Bravo
Víctor Israel
Porto, Night Watchman
Pilar Alcón
Nurse (as Diana Eagle)
José Canalejas
Eduardo Bea
Teresa del Olmo
