Director/a
Roy Rowland
DIRECTOR/A
Reparto (por orden de créditos)
Margaret O'Brien
Alpha
James Craig
Mike Regan
Marsha Hunt
Katie Mallory
Philip Merivale
Professor Peter Vincent
Henry O'Neill
Professor Joshua Pringle
Donald Meek
Professor Catty
Keenan Wynn
Packy Roost
Alan Napier
Dr. Woodring
Sara Haden
Rhoda Kitterick
Kathleen Lockhart
Mrs. Catty
Walter Fenner
Professor Endicott
Howard Freeman
Professor Richards
Elisabeth Risdon
Mrs. Pringle
Robert Blake
Jerry
Eddie Acuff
Policeman(uncredited)
Hooper Atchley
Pepi(uncredited)
Barbara Bedford
Telephone Operator(uncredited)
William Bishop
Reporter(uncredited)
Charles D. Brown
Ed(uncredited)
Naomi Childers
Matron(uncredited)
Fred Coby
Bit Role(uncredited)
Gino Corrado
Man in Nightclub(uncredited)
Jules Cowles
Man in Hallway(uncredited)
Donald Curtis
Mounted Policeman(uncredited)
Bobby Driscoll
Bobby(uncredited)
Mary Elliott
Hat Check Girl(uncredited)
Paul Fung
Chinese Man(uncredited)
Ava Gardner
Russell Gleason
Mickey Golden
Fighter(uncredited)
Gloria Grafton
Edward Hearn
Al Hill
Mug(uncredited)
Sai King
Jack Lambert
Lefty Moran(uncredited)
Nolan Leary
Fight Manager(uncredited)
George Levine
John Maxwell
Detective(uncredited)
Mike Mazurki
Edward McWade
Old Man in the Park(uncredited)
Kay Medford
Barry Norton
Man on Train(uncredited)
Robert Emmett O'Connor
Lee Phelps
Gerald Pierce
Delivery Boy(uncredited)
Bert Roach
Man Eating Spaghetti(uncredited)
Pauline Starke
Bobby's Mother(uncredited)
Charles Sullivan
Referee(uncredited)
Ray Teal
Guard(uncredited)
Ray Walker
Trainer(uncredited)
Allen Wood
Tough Kid(uncredited)
Tom Yuen
Joe Yule
Tenant(uncredited)
Victor Sen Yung