Passionnelle
Pour une nuit d'amour (original)
Thérèse kills her lover during the very night of her wedding to the count of Vétheul. To gain a night with her, a modest local worker agrees to bury the body.
Starring Odette Joyeux, Sylvie, Roger Blin, André Alerme, Raymond Galle, Claire Olivier, Aimé Gaillard, Zita Fiore, Lyska Wells, Henri Arius
It's a drama and romance movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Australia.