Margarita is found, naked and bloody in a luxurious house and is promptly taken to a mental institute. The doctors and nurses meant to take care of her aren't exactly who they seem and a mysterious figure, clad in black, circles the premise at night, offing nubile young women.
Lina Romay
as Margarita Martin
Nanda van Bergen
as Irina Farkas
Michael Maien
as Dr. Antonio
Esther Studer
as Petra
Monica Swinn
as Sandra Mauro
Peggy Markoff
as Emilia
Kurt Meinicke
as Dr. Farkas
Brigitte Meyer
as Gabi
Peter Baumgartner
as Inspector Risi
Dagmar Bürger
as Peggy
Ly Frey
as Helga (uncredited)
Randolf Kronberg
as Inspector Risi (voice) (uncredited)
