John Vernon as Jonathan Stryker

Samantha Eggar as Samantha Sherwood

Linda Thorson as Brooke Parsons

Anne Ditchburn as Laurian Summers

Lynne Griffin as Patti O'Connor

Sandee Currie as Tara DeMillo

Lesleh Donaldson as Christie Burns

Deborah Burgess as Amanda Teuther

Michael Wincott as Matthew

Maury Chaykin as Monty

Joann McIntyre as Secretary

Calvin Butler as Dr. Pendleton

Kate Lynch as Receptionist

Booth Savage as Amanda's Boyfriend

William Marshall as Attendant

James Kidnie as Attendant

Daisy White as Roommate

Shannon Tweed as Stand In / Body Double (uncredited)

Richie Pierce as Gas Station Attendant