Director
Mervyn LeRoy
DIRECTOR
Albert Lewin
Stars (in credits order)
Greer Garson
Marie Curie
Walter Pidgeon
Pierre Curie
Henry Travers
Eugene Curie
Albert Bassermann
Professor Jean Perot
Robert Walker
David Le Gros
C. Aubrey Smith
Lord Kelvin
May Whitty
Madame Eugene Curie
Victor Francen
President of University
Elsa Bassermann
Madame Perot
Reginald Owen
Dr. Becquerel
Van Johnson
Reporter
Margaret O'Brien
Irene Curie - Age 5
James Hilton
Narration Spoken Byvoice
Mariska Aldrich
Tall Womanuncredited
Tony Carson
Man at Accidentuncredited
Ruth Cherrington
Swedish Queenuncredited
Ray Collins
Lectureruncredited,voice
Guy D'Ennery
Professoruncredited
George Davis
Cart Driveruncredited
Harold De Becker
Franz Dorfler
Assistant Tailoruncredited
Justine Duney
Woman at Accidentuncredited
Tay Dunn
William Edmunds
Nestor Eristoff
Board Memberuncredited
Al Ferguson
Edward Fielding
Howard Freeman
Prof. Constantuncredited,voice
Linda Lee Gates
Perot Granddaughteruncredited
Marie Louise Gates
Lisa Golm
Lucilleuncredited
Ilka Grüning
Seamstressuncredited
Lumsden Hare
Professor Rogetuncredited
Teddy Infuhr
Sonuncredited
James Kirkwood
Isabel La Mal
Gene Lockhart
Bit Partuncredited
Miles Mander
Businessmanuncredited
George Meader
Singing Professoruncredited
Dickie Meyers
Master Michauduncredited
Noel Mills
Wedding Guestuncredited
Leo Mostovoy
Photographeruncredited
Alan Napier
Dr. Bladhuncredited
Moroni Olsen
President of Businessman's Boarduncredited
Maria Page
Gigi Perreau
Eve at 18 Monthsuncredited
Francis Pierlot
Monsieur Michauduncredited
Nita Pike
Dorothy Raye
Nurseuncredited
Almira Sessions
Madame Michauduncredited
Arthur Shields
Wyndham Standing
King Oscaruncredited
Count Stefenelli
Conference Guestuncredited
Ray Teal
Driveruncredited
Charles Trowbridge
Michael Visaroff
Proud Papauncredited
Marek Windheim
Jewelry Salesmanuncredited
Frederick Worlock
Eustace Wyatt
Doctoruncredited