Adieu l’ami (Farewell friend) is a 1968 French-Italian film directed by Jean Herman; producer Serge Silberman, screenplay by Sebastien Japrisot.
Dino Barran, a doctor legionnaire, must help the wife of a man he accidentally killed. He lets himself be locked in a vault to successfully open a safe and put in their place of incriminating documents. Not knowing the combination, an entire weekend is required. He decided to team up with Franz Propp, a legionnaire who has scores to settle with him.