Monsieur X is a dazzling tale of glamour, riches, violence and ultimately tragedy. Patrice des Moutis was a handsome, charming and well-educated Frenchman with an aristocratic family, a respectable insurance business, and a warm welcome in the smartest Parisian salons. He was also a compulsive gambler and illegal bookie.

Between the late 1950s and the early 1970s, Des Moutis made a daring attempt to beat the French state-run betting system. His success so alarmed the authorities that they repeatedly changed the rules of betting in an effort to stop him. And so a battle of wills began, all played out on the front pages of the daily newspapers as the general public willed Des Moutis on to ever greater triumphs.

He remained one step ahead of the law until finally the government criminalised his activities, driving him into the arms of the underworld. Eventually the net began to close, high-profile characters found themselves the target of the state's investigation, and people began turning up dead.