The Swindle(2006)

The attorney Mr. Redi, an old rich man, has no heir a part from a daughter that he has never seen nor known. At his death all his wealth will be devolved in charity. The only persons to take care of him, the one prescribing him very expensive medicaments and the other granting him sexual favors, but mostly it's his faithful chauffeur that aspires to put his hands on his entire wealth.