Robert Taylor as Erich Lohkamp

Margaret Sullavan as Patricia Hollmann

Franchot Tone as Otto Koster

Robert Young as Gottfried Lenz

Guy Kibbee as Alfons

Lionel Atwill as Breuer

Henry Hull as Dr. Becker

Charley Grapewin as Local Doctor

Monty Woolley as Dr. Jaffe

Stanley Andrews as Officer giving toast (uncredited)

Jessie Arnold as Nurse at sanatorium (uncredited)

George Chandler as First comic with singer (uncredited)

Marjorie Main as Old woman by phone (uncredited)

Francis X. Bushman Jr. as Second comic (uncredited)

Spencer Charters as Herr Schultz

Roger Converse as Becker’s Assistant

Mitchell Lewis as Boris (uncredited)

Esther Muir as Frau Schmidt (uncredited)

Edward McWade as Ludwig, Pat’s majordomo (uncredited)

Claire McDowell as Landlady Frau Zalewski (uncredited)