Michael Sarrazin

as Michael Taylor

Susan Clark

as Paula West

Anthony Perkins

as Lawrence Miles

Howard Duff

as Lester Harlen

Kate Reid

as Mrs. Swanscutt

Al Waxman

as Dellassandro

Elizabeth Shepherd

as Frances

Kenneth Welsh

as Dr. Klifter

Ken James

as City Editor

Lee Broker

as Bartender

John Candy

as John

Douglas Campbell

as The Walker

Maury Chaykin

as Rollins

John Friesen

as Trucker

Joe Flaherty

as Roger

David Gardner

as Cunningham

Ron Hartmann

as Howell

Michael Ironside

as Edgar

Eugene Levy

as Matt

Kate Lynch

as Stewardess

Sabina Maydelle

as Penelope

Bob McHeady

as Electrician

Heather McKay

as Squash Pro

Catherine O'Hara

as Judith

Pita Oliver

as Lorraine

Vivian Rakoff

as Dr. Wright

Dave Thomas

as Howie

Bob Warner

as Detective

Charles Dennis

as Reporter in Newspaper Office (uncredited)