Plus beau que moi, tu meurs (1982)
Directed by Philippe Clair

Film Synopsis

Aldo and Marco are two brothers who could not be more different.  Whereas Marco was a saintly child, reared in a strict Catholic school, Aldo was always a nasty piece of work, fixated on the pursuit of women and easy money.  Implicated in a counterfeiting operation that goes badly wrong, Aldo ends up in prison.  Here, he so exasperates the prison governor that he is soon released on parole.  Suspected of being involved in a bank hold-up, Aldo seeks the help of his brother, who is now a priest in Paris.  With the police closing in on him, he leaves the country and heads for Tunisia, to stay with a childhood friend named Prosper.  Accompanied by a missionary, Marco goes after his brother in the hope of persuading him to give himself up to the authorities so that he can clear his name.