Edward Anderson's story about an aging janitor and an American executive who form an unlikely alliance in order to carry out an elaborate jewel heist is set in 1960's London and based on actual events. The tense thriller stars Michael Caine as the scheming maintenance man who longs to relieve his employers at the London Diamond Corporation of their valuable inventory, and Demi Moore as the savvy executive who is completely perplexed by the wealthy diamond magnates.