In this fourth book in Martin Cruz Smith's splendid series, an amiable Irish American gangster explains to Arkady Renko what he and the other 84 wanted Americans hiding out in Cuba do with themselves. "We try to stay alive. Useful. Tell me, Arkady, what are you doing here?" "The same," says Renko--and it's true. His life as a Russian cop has become so bleak and lonely that he takes any opportunity to shake things up, even spending his own savings to fly to Havana when an old colleague is found dead--floating inside an inner tube after night-fishing in Havana Bay. Renko sets out to make himself useful in this shabby, fascinating, haunted country whose inhabitants look on Russians with the cold disdain of survivors of a nasty divorce. As he did so well in Gorky Park, Smith again makes Renko very much a classic Russian hero in temperament and tradition, but also the eternal outsider. He is at times close to the edge of despair--but his trip to Havana restores his natural curiosity and life force.