PlotEdit

In the South of France the Saint becomes friends with Texan adventurer Rod Huston and the famous mathematician Henri Flambeau and his daughter Janine. They are all amazed at the luck that seems to follow Boris, the ex-king of Slavonia, at the card tables and Henri is convinced that such a run of wins can only mean one thing - the ex-king is a cheat. It soon becomes clear that he is trying to amass enough money to try and regain his throne. The Saint and Rod discover the factory where the king's specially marked cards are made and destroy them, whilst Henri takes the king, now forced to use ordinary cards, on at the baccarat table.