I had just placed another $100 bet when the man in a dark suit, flanked by two larger men in darker suits, approached me from behind. I pretended not to see them coming, relaxing my posture against the plush back of the velvet chair. My heart raced, but I kept my breath even and my gaze focused on the ordered diagram of cards scattered across the red felt. It was my third month as a professional card counter, and I was about to be kicked out of a casino for the first time.