Sons of Satan.

The young boy Normand grows up to become the mastermind of a complex criminal network in London. He runs not only a gang of thieves but also a blackmail operation, a film company, and a newspaper, all in aid of shady dealings. Normand's cunning has helped him evade the law so far, but after his theft of the Littleborough jewels, he finds he may have pushed his luck too far.