The pull of the parents

If you were the child of the late Sonia Seyr, a famous concert pianist, and Robert Seyr (played by a hefty Niels Arestrup), a corrupt dealer in disputed property in Paris, how would you resolve the pull between what the two stood for, particularly if you loved them both.

 
This is the contradiction that Thomas Seyr (acted adroitly by Romain Duris) has lived with all his couple of dozen years. Thomas suffers from a split personality, a debilitating form of schizophrenia. When he was younger he was also a pianist with potential, but then after his mother died he gave it all up to work for his father, as a hit man. His job is to help evict people who have squatted on property so that his father can sell it at a profit.