The Power of the Past (2002)

Days after the death and funeral of his high-powered army father, children's book author Gianni Orzan (Sergio Rubini) meets the suspicious Gianni Bogliasco (Bruno Ganz), who proceeds to recite an uncomfortable amount of accurate knowledge about the author's life. Gianni ends up running into Bogliasco "accidentally" a number of times, until Bogliasco drops a bombshell.