An American college student in Rome and his sister in New York investigate a series of killings in both locations where their resident addresses are the domain of two covens of witches.

Cast: Daria Nicolodi, Alida Valli, Sacha Pitoeff, Gabriele Lavia, Veronica Lazar, Irene Miracle, Leigh McCloskey, Eleonora Giorgi
Director: Dario Argento
Producer(s): Claudio Argento
Writer(s): Dario Argento