In this fast-paced international suspense thriller, Nick Donahue, an American Gambler living in London, is in Venice playing Blackjack when he meets a beautiful woman in desperate need of help. Nick obliges and is soon embroiled in a whirlwind of mystery and intrigue.

He is kidnapped by jewel thieves, then released and dumped in the woods outside Prague. Calling on his brother Alex, a banker at Zurich's SuisseBank, for assistance, Nick soon finds himself juggling Alex's problem: the murder of his boss and a worldwide money laundering scheme the bank has been running. When Nick blows the whistle on SuisseBank, its main client, the New York mob is none too happy with his interference and their loss of revenue.

They demand revenge and restitution, which only Nick, with all of his gambling tricks, can provide.