Eddie Constantine as Nick Carter

Nicole Courcel as Dora Beckmann

Joe Dassin as Janos Adler

Jeanne Valérie as Lia

Jacques Harden as Captain Herbert

Roger Rudel as Beckmann

Jean Ozenne as Wedermeyer sr.

Pierre Rousseau as Niemann

Michel Ruhl as Rudolf Wedermeyer

Gordon Felio as Gondolach

Graziella Galvani as Nanny

Carl Studer as Commodore

Donald O'Brien as

Jimmy Karoubi as Little Man

Marcel Champel as Kommissar

Marcello Pagliero as Prof. Witt (uncredited)