Orson Welles
Richard Samuels
Gretta Adler
Evelyn Allen
Walter Ash
Grover Burgess
Conspirator
Joseph Cotten
George Duthie
Martin Gabel
Joe Holland
Sonja Jones
William Mowry
Vakhtangov
Epstein
John Houseman
John Hoyt
Jeannie Rosenthal
Norman Lloyd
George Coulouris
Sam Leve
Dr. Mewling
Longchamps Kid #1
Virginia Welles
Mercury French Horn Player
Mercury Percussion Player
Mercury Trumpet Player (as Steve Parry)
Grandmother Samuels
Muriel Brassler
Lorelei Lathrop
Radio Director
Les Tremayne
Barbara Luddy
Radio Announcer
Mrs. Samuels
Singer
Band Leader
Drummer
Double Bass (as David Swift)
Guitar
Trombone
Tenor Sax
Alto Sax & Clarinet
Baritone Sax
Trumpet
Longchamps Kid #2
Classmate
Hobo
Cast
Museum Visitor (uncredited)
Museum Patron (uncredited)
Passerby in Manhattan (uncredited)
Lizzy (uncredited)
Theatre Owner (uncredited)
Studion Foley Artist (uncredited)