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