A woman that during the daytime is an insignificant librarian, at night becomes a fascinating mysterious dark lady. She uses the personal advertisements on the newspapers to obtain appointments with men then kills them. These murders last until the wife of one victim decides to investigate. Written by Paola Vaccari
Stephanie Zimbalist
as Sarah Martin
Jennifer O'Neill
as Heather Moore
Robin Thomas
as Evan Martin
Rosemary Dunsmore
as Susan Merchant
Gina Gallego
as Theresa Casona
Colm Feore
as
Clark Johnson
as
Dave Nichols
as Michael
Patricia Collins
as Dr. Kenderson
Joseph Griffin
as Julio Casona
Ben Gordon
as Rothman
Caroline Yeager
as Pamela
