Spanish horror director Amando De Ossorio, who achieved cult status with the Blind Dead series of Knights Templar zombie films which began with La Noche del Terror Ciego, takes on the legend of the Lorelei in this disappointing effort. Helga Liné is the mysterious siren who turns into a silly-looking reptilian horror by night and rips out the hearts of nubile victims at a girls' school. Luciano Stella (aka Tony Kendall) is the virile guard in tight pants, who falls in love with the Lorelei long enough to visit her underwater cave. ~ Robert Firsching, Rovi