Kaleidoscope

Despite being independently wealthy, American Barney Lincoln, just because he can, devises and executes a plot to mark the master printing plates for the playing cards manufactured by Geneva-based Kaleidoscope, whose cards have an intricate kaleidoscope pattern on their backs. In marking the cards and knowing to which casinos the cards are to be shipped, Barney is able to win big at casino card games by reading the marked cards. Along for the ride is his new London based girlfriend, Angel McGinnis, who unknown to Barney has her own motivations in following him. Angel doesn't know what Barney is up to beyond believing that he is a good card player - too good. However, Scotland Yard does know what Barney is up to, and they co-opt him for a ploy of their own, namely to squeeze one of their marks, sadistic global narcotics dealer Harry Dominion. Dominion, who is currently deep in debt to finance a project, owns and operates his own casino, and Scotland Yard wants Barney to drain him of his funds at this vulnerable state in his life through card games of chance at his casino. Barney has no option but to cooperate with Scotland Yard. In doing so, Barney puts his and Angel's lives at risk especially if Dominion figures out Barney's scam.