When Dr. Pieter Fales' patients start receiving ominous letters and getting murdered by an unknown black-clad assailant, he and his daughter both come under suspicion.
Dr. Pieter Fales
Alison Fales
Julie
Doug
Donahue
Jake
Gilbert
Pat
Rosemary
Françoise
Sally
Archie
Barney
Freddy
Willy
Maxine
Bruce
Fritz
Fritz's Friend
Housekeeper
Girl on Motorbike
Boy on Motorbike
Secretary (uncredited)
Bartender (uncredited)
