A mysterious blonde woman kills one of a psychiatrist's patients, and then goes after the high-class call girl who witnessed the murder.

Director
Brian De Palma
Writer
Brian De Palma
Cast
Michael Caine as Dr. Robert Elliott
Angie Dickinson as Kate Miller
Nancy Allen as Liz Blake
Keith Gordon as Peter Miller
Dennis Franz as Detective Marino
David Margulies as Dr. Levy
Susanna Clemm as Betty Luce
Ken Baker as Warren Lockman
Brandon Maggart as Cleveland Sam
Anneka Di Lorenzo as Nurse
Bill Randolph as Cabbie
William Finley as voice of "Bobbi" (uncredited)
Mark Margolis as mental patient (uncredited)