Monty Woolley as John Sidney Howard

Roddy McDowall as Ronnie Cavanaugh

Anne Baxter as Nicole Rougeron

Otto Preminger as Major Diessen

J. Carrol Naish as Aristide Rougeron

Lester Matthews as Mr. Cavanaugh

Jill Esmond as Mrs. Cavanaugh

Ferike Boros as Madame

Peggy Ann Garner as Sheila Cavanaugh

Merrill Rodin as Willem

Maurice Tauzin as Pierre

Fleurette Zama as Rose

William Edmunds as Frenchman

Marcel Dalio as Focquet

Marcelle Corday as Madame Bonne

Odette Myrtil as Madame Rougeron

Jean Del Val as Railroad Official

Rudolph Anders as Lieutenant

Henry Rowland as Military Policeman

Helmut Dantine as Aide

George Davis as Barman