The Saint Lies in Wait

The Saint Lies in Wait is a 1966 French-Italian comedy crime film directed by Christian-Jaque and starring Jean Marais, Jess Hahn and Jean Yanne. It is an adaptation of a french only Simon Templar novel Le Saint prend l'affût (1960), credited to Leslie Charteris, but in fact ghostwritten. It was shot at the Billancourt Studios in Paris. The film's sets were designed by the art director Jean Mandaroux. At the time the British television series The Saint starring Roger Moore was at the height of its popularity.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.