The director of this film, José Giovanni, is also the author of the novel in which the movie is based: "Les Aventuriers".
This film is actually a sequel to Les Aventuriers "The Last Adventure" (1967), directed by Robert Enrico, although it doesn't share any of the actors with the previous movie.
Novelist and screenwriter José Giovanni's first work as a film director.
Michel Constantin's character was played in a previous film by Lino Ventura.
Michel Constantin's first protagonist, prior to this film, he had only been in supporting roles, being better known at the time for his career as a Volleyball player during the 1950s.