Jean Seberg as Bettina Ralton

Claude Rich as Bernard Noblet

Elsa Martinelli as Juliette

Elisabeth Flickenschildt as Madame Ralton

Günther Jerschke as Goretti

Ady Berber as Max

Walter Roderer as Cuendet

Pierre Vernier as Roger

Jacques Morel as Amédée de St. Leu

Jean-Paul Moulinot as Jeweler

Jacques Balutin as Agent

France Rumilly as Lady with the ring

Daniel Ceccaldi as Captain of the boat

Claude Darget as Cantonal inspector

Henri Virlogeux as Picard

Annette Poivre as Cleaning lady

Jacques Dynam as Commissioner

Pierre Mirat as Brigadier

Jean-Pierre Rambal as Policeman

Jacques Santi as Traveler at the airport

Norma Dugo as Cleaning lady

Michel Danjou as

Bernard Musson as Policeman

Yves Arcanel as

Louis Viret as Policeman

Paul Pavel as Brigadier

Marcel Gassouk as Brigadier

Günter Lüdke as Marcellino

Horst Pasderski as

Werner Schwier as Dr. Worms

Günther Ungeheuer as Prof. Schmoll

Marcel Charvey as Ducret, member of the billiards club (uncredited)

André Dalibert as Policeman at the police station (uncredited)

Yves Elliot as Cantonal inspector (uncredited)

Marius Gaidon as Policeman at the police station (uncredited)

Max Melder as (uncredited)

Gaston Meunier as Man in the toilet (uncredited)

Laure Paillette as Cleaning lady (uncredited)

Jacques Préboist as Employee at the airport (uncredited)