All Cast
Robert Hays
D.H. 'Hank' Mercer / Biff Deegan
Catherine Mary Stewart
Marissa
Christopher Murney
Lt. Greenberg
Fred Gwynne
Victor Greville
Celeste Holm
Claire
Jonathan Moore
Nicholas Rubinstein
Martin Neufeld
Pete
Michael Copeman
Bunty Webb
Eric Keenleyside
Robin Ward
Eric Fink
Thick Wilson
Al Bernardo
Louis Di Bianco
Marc Gomes
Raymond Hunt
James Walton
Lynne Cormack
Lynne Gorman
Robbi Baker
Alan Rose
Tony (uncredited)
Jacques Sandulescu
Timothy (uncredited)
Lewis J. Stadlen
Norman Wagstaff (uncredited)