-- New York Times Modern-day nuclear smugglers, determined Ukrainian rebels, a beautiful anti-terrorism agent from Europol-all will combine to present Pitt with the most dangerous challenge of his career.And not only Pitt. His two children, marine engineer Dirk and oceanographer Summer, are exploring a mysterious shipwreck of their own, when they are catapulted into his orbit. The three of them are used to perilous situations-but this time, they may have found their match.