NEW YORK TIMES BESTSELLER - "A globe-trotting, bomb-ticking, loyalty-blurring thriller." --People Dr. Jonathan Ransom, a surgeon for Doctors Without Borders, is climbing in the Swiss Alps with his wife, Emma, when she falls into a hidden crevasse and dies. Twenty-four hours later, Jonathan receives an envelope addressed to his wife containing two baggage-claim tickets. Puzzled, he journeys to a railway station only to find...