A person who had usurped the identity of a famous writer of detective stories was killed in the train. Why and by whom?
as Clarisse Coquet
as Armand Le Noir
as Charles de Bruine
as Nazarian
as Griset
as Avril
as Mademoiselle Malvina
as Léopold
as Pincet
as Francis
as Philosopher
as Le Noir's concierge
as Commissioner
as Traveler
as Lost and Found employee
as Organizer
as Phyllis
as Princess
as Philosopher
as Chabrol, publisher
as Henri
as Madeleine
