Ten Days Wonder
La Décade prodigieuse (original)
Starring Anthony Perkins, Michel Piccoli, Marlène Jobert, Orson Welles, Guido Alberti, Ermanno Casanova, Mathilde Ceccarelli, Eric Frisdal, Aline Mantovani, Corinne Koeningswarter
It's a drama and thriller movie, and has a rating of 6.1 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.