Lino Ventura
Sébastien Grenier
Michel Piccoli
Jean-Paul Chance
Bruno Cremer
Alain Richard
Bernard Fresson
Henri Marchand
Roger Jendly
Commissioner Lohmann
Beate Kopp
Grenier's secretary
Christian Baltauss
Librarian
Jean-Paul Franky
Rudy 'la blonde'
Yves Boisset
Richard's assistant
Daniel Plancherel
Inspector Vogel
Philippe Brizard
Grenier employee
Robert Dalban
Narrator (voice) (uncredited)