Gambit (1966)

Cockney cat burglar Harry Dean needs Hong Kong dancer Nicole Chang's help to pull off the perfect heist. With a simple makeover and a new wardrobe, Nicole's resemblance to wealthy recluse Mr. Shahbandar's deceased wife is uncanny. While Shahbandar is distracted by the mesmerizing Nicole, Harry takes steps to swipe a priceless artifact from under the tycoon's nose. But even the most intricate schemes have a way of unraveling.