I’m the world’s greatest detective, and tonight I’ll be doing the Hamlet. — Here I find myself, snowed in at a Rocky Mountain chateau with seven total strangers: an aging socialite, a Russian cosmonaut and likely KGB agent, his mistress (also an acclaimed Bolshoi ballerina), the world’s second-greatest jewel thief, a Texarkana oil baron with a bounty on his head, a seductive Czech…