El misterioso caso de mí otro yo: Reparto
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
Alan Rose
Tony (uncredited)
Jacques Sandulescu
Timothy (uncredited)
Lewis J. Stadlen
Norman Wagstaff (uncredited)
Gavin Steed
Roger Delacroix (uncredited)