In A.D. 327, a Roman galley barely escapes a pirate attack with its extraordinary cargo. In 1916, a British warship mysteriously explodes in the middle of the North Sea. In the present day, a cluster of important mosques in Turkey and Egypt are wracked by explosions. Does anything tie them together? NUMA director Dirk Pitt is about to find out. Clive Cussler is a New York Times bestselling author.