When his ex-partner, Doyle Flanagan, is blown up by a car bomb, Tony Valentine joins the investigation to find his friend's killers and becomes embroiled in the multimillion-dollar blackjack scam that Flanagan had been trying to solve.

Valentine is in Las Vegas, on the trail of his wayward son, Gerry, who has gone AWOL from card-counting school. Mixing work with parental responsibility, Tony also agrees to help maverick casino owner Nick Nicocropolis prevent two rival owners from putting him out of business.

Tony Valentine is an expert at spotting cheats. He's tossed them out of gambling casinos from Atlantic City to Las Vegas and Monaco. But though Tony has never met a scam he couldn't crack, his son and partner, Gerry, has just walked into one with a body count. What started with a conman's deathbed confession turns into a deadly Las Vegas grudge match during the world's biggest poker tournament. While Gerry and his shady friends tangle with the Vegas...