When his mother dies, young Peter Ibbetson leaves Paris and his best friend, Mary, behind to live with a severe uncle in England. Years later, Peter is an architect with little time for women, until he begins a project with the Duke and Duchess of Towers. When Peter and the duchess become great friends, she reveals that she is Mary — but the duke soon suspects his wife of infidelity and challenges Peter to a duel, threatening the pair's second chance.
Gary Cooper
as Peter Ibbetson
Ann Harding
as Mary, Duchess of Towers
John Halliday
as The Duke of Towers
Ida Lupino
as Agnes
Douglass Dumbrille
as Colonel Forsythe
Virginia Weidler
as Mimsey
Dickie Moore
as Gogo
Doris Lloyd
as Mrs. Dorian
Gilbert Emery
as Wilkins
Donald Meek
as Mr. Slade
Christian Rub
as Major Duquesnois
Elsa Buchanan
as Madame Pasquier
