Garras de Lorelei, Las was released in the year 1974。Garras de Lorelei, Las is also called as When the Screaming Stops, The Night the Screaming Stopped, The Lorelei's Grasp, Grasp of the Lorelei, Abbraccio mortale di Lorelei。

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 Sirgurd is engaged to kill the monster.