The legendary Loreley has been living for centuries in a grotto beneath the river Rhein in Germany. Every night when the moon is full, she turns into a reptile-like creature craving for human blood. When one girl after another of a nearby boarding school is killed by her, a hunter named Sigurd is engaged to kill the monster.
Tony Kendall
as Sigurd
Helga Liné
as Lorelei
Silvia Tortosa
as Elke Ackerman
Josefina Jartin
as Boarding School Principal
Loreta Tovar
as Martha (as Lolita Tovar)
José Thelman
as Carlo Donati (as Joseph Thelman)
Luis Induni
as Mayor
Francisco Nieto
as Blind Violinist
Betsabé Ruiz
as Bride-to-Be
Luis Barboo
as Alberic
Ángel Menéndez
as Professor Von Lander
Sergio Mendizábal
as Doctor
