Dark Inclusion

Dark Inclusion (French: Diamant noir; also known as Dark Diamond) is a 2016 French drama film directed and co-written by Arthur Harari, and starring Niels Schneider and August Diehl. It tells the story of an aimless young man who decides he must avenge the wrong done to his father by his wealthy uncle, a diamond dealer in Antwerp. His plan is not as clever as he thinks and, after three of his helpers are killed, he ends up even more alienated.