Dany Carrel as Amnesiac / Michèle Isola / Dominique Loï

Madeleine Robinson as Jeanne Mureau

Hubert Noël as François

Jean Gaven as Gabriel

René Dary as Doctor Doulin

Francis Nani as Serge

Robert Dalban as Boss of the garage

Dominique Davray as Concierge

Edmond Tamiz as Manservant

Lucien Callamand as Doctor from Antibes (uncredited)

Héléna Manson as Nurse (uncredited)

Émile Riandreys as Doorman (uncredited)

Julien Verdier as Garage employee (uncredited)