Koko

From the #1 New York Times bestselling author of Ghost Story comes “an inspired thriller” ( The Washington Post ) about four Vietnam vets linked by a shattering secret and their global hunt to track down a brutal killer.  Koko. Only four men knew what it meant. Now they must stop it. They were Vietnam vets—a doctor, a lawyer, a working stiff, and a writer. Very different from each other, they are nonetheless linked by a shared history and a devastating secret. Now, they have been reunited a