Michael Sarrazin
— Michael Taylor
Susan Clark
— Paula West
Anthony Perkins
— Lawrence Miles
Howard Duff
— Lester Harlen
Kate Reid
— Mrs. Swanscutt
Al Waxman
— Dellassandro
Elizabeth Shepherd
— Frances
Kenneth Welsh
— Dr. Klifter
Ken James
— City Editor
Lee Broker
— Bartender
John Candy
— John
Douglas Campbell
— The Walker
Maury Chaykin
— Rollins
John Friesen
— Trucker
Joe Flaherty
— Roger
David Gardner
— Cunningham
Ron Hartmann
— Howell
Michael Ironside
— Edgar
Eugene Levy
— Matt
Kate Lynch
— Stewardess
Sabina Maydelle
— Penelope
Bob McHeady
— Electrician
Heather McKay
— Squash Pro
Catherine O'Hara
— Judith
Pita Oliver
— Lorraine
Vivian Rakoff
— Dr. Wright
Dave Thomas
— Howie
Bob Warner
— Detective
Charles Dennis
— Reporter in Newspaper Office (uncredited)
Tommy King
— Hockey Kid