Desc: Il mago per forza: Directed by Marino Girolami, Marcello Marchesi, Vittorio Metz. With Tino Scotti, Isa Barzizza, Aroldo Tieri, Adriano Rimoldi. In the prison of San Vittore there is, among other detainees, a strange type that they call "Il Cavaliere". The latter suffers a conviction for theft and his fellow prisoners have a certain respect for him.