الإعلان التشويقي
طاقم التمثيل
Albert Bassermann
Professor Jean Perot
C. Aubrey Smith
Lord Kelvin
Lumsden Hare
Professor Roget (uncredited)
Miles Mander
Businessman (uncredited)
Alan Napier
Dr. Bladh (uncredited)
Ilka Grüning
Seamstress (uncredited)
Frederick Worlock
Businessman (uncredited)
Gene Lockhart
Bit Part (uncredited)
Francis Pierlot
Monsieur Michaud (uncredited)
Wyndham Standing
King Oscar (uncredited)
Ruth Cherrington
Swedish Queen (uncredited)
Charles Trowbridge
Board Member (uncredited)
May Whitty
Madame Eugene Curie
Elsa Bassermann
Madame Perot
Moroni Olsen
President of Businessman's Board (uncredited)
Walter Pidgeon
Pierre Curie
Victor Francen
President of University
Edward Fielding
Board Member (uncredited)
Greer Garson
Marie Curie
Guy D'Ennery
Professor (uncredited)
George Davis
Cart Driver (uncredited)
William Edmunds
Cart Driver (uncredited)
Teddy Infuhr
Son (uncredited)
Almira Sessions
Madame Michaud (uncredited)
Michael Visaroff
Proud Papa (uncredited)
Marek Windheim
Jewelry Salesman (uncredited)
Ray Collins
Lecturer (voice) (uncredited)
Arthur Shields
Businessman (uncredited)
Margaret O'Brien
Irene Curie - Age 5
Gigi Perreau
Eve at 18 Months (uncredited)
Eustace Wyatt
Doctor (uncredited)
Isabel La Mal
Woman at Accident (uncredited)
George Meader
Singing Professor (uncredited)
María Pagés
Woman at Accident (uncredited)
Ray Teal
Driver (uncredited)
Howard Freeman
Prof. Constant (voice) (uncredited)
James Hilton
Narration Spoken By (voice)
Lisa Golm
Lucille (uncredited)
Van Johnson
Reporter
James Kirkwood
Board Member (uncredited)
Reginald Owen
Dr. Becquerel
Al Ferguson
Man at Accident (uncredited)
Henry Travers
Eugene Curie
Robert Walker
David Le Gros