One spring evening, two men and a woman walked into the Ritz Club casino, an upmarket establishment in London’s West End. Security officers in a back room logged their entry and watched a grainy CCTV feed as the trio strolled past high gilded arches and oil paintings of gentlemen posing in hats. Casino workers greeted them with hushed reverence.
The security team paid particularly close attention to one of the three, their apparent leader. Niko Tosa, a Croatian with rimless glasses balanced on the narrow ridge of his nose, scanned the gaming floor, attentive as a hawk. He’d visited the Ritz half a dozen times over the previous two weeks, astounding staff with his knack for roulette and walking away with several thousand pounds each time. A manager would later say in a written statement that Tosa was the most successful player he’d witnessed in 25 years on the job. No one had any idea how Tosa did it. The casino inspected a wheel he’d played at for signs of tampering and found none.
More here – Bloomberg