This swinging-sixties romantic crime caper stars a suave Warren Beatty as gambling playboy Barney Lincoln. Realising that all European casinos use the same playing card manufacturer, Barney breaks into the company and marks the cards. After embarking on a 'miraculous' winning streak across Europe, he meets and falls for fashion designer Angel (Susannah York). The spanner in his works would be her father Scotland Yard Inspector 'Manny' McGinnis (Clive Revill)... or can cocksure Barney can cut a deal?