William Powell

David Talbot aka Jean Pelletier

Hedy Lamarr

Lucienne Talbot

Claire Trevor

Michelle Allaine

Basil Rathbone

Henri Sarrou

Margaret Wycherly

Madame Pelletier

Felix Bressart

Dr. Andre Tessier

Sig Ruman

Dr. Alex Dubroc

H.B. Warner

Prosecuting Attorney

Philip Merivale

Commissaire

Enrique Acosta

Associate Judge (uncredited)

Francis X. Bushman Jr.

Giant Policeman (uncredited)

Frank Conroy

Defense Attorney (uncredited)

Gibson Gowland

Reporter (uncredited)

Fritz Leiber

Foreign Minister Deval (uncredited)

Eric Mayne

Courtroom Spectator (uncredited)

Anna Q. Nilsson

Madame Deval (uncredited)

John St. Polis

Professor (uncredited)

Vladimir Sokoloff

Carlos Le Duc (uncredited)

Torben Meyer

Old Man (uncredited)

Jack Conway

Director

Guy Trosper

Guión, Guión Adaptado

John H. Kafka

Guión, Historia

Howard Emmett Rogers

Guión, Historia

Joseph Ruttenberg

Director de Fotografía

Bronislau Kaper

Compositor de la Música Original

Edwin H. Knopf

Productor

Metro-Goldwyn-Mayer

Compañía de Produccion

George Boemler

Editor