In the Micronesian islands, a top-secret U.S. government-sponsored undersea lab conducting vital biomedical research on a rare jellyfish known as the Blue Medusa suddenly disappears. At the same time, off Bermuda, a bathysphere is attacked by an underwater vehicle and left helpless a half-mile below the surface, its passengers--including Zavala--left to die. Only Kurt Austin's heroic measures save them from a watery grave, but suspecting a connection, Austin puts the NUMA team on the case.

Austin's team has no way to prepare for what comes next: a hideous series of medical experiments, an extraordinarily ambitious Chinese criminal organization, and a secret new virus that threatens to set off a worldwide pandemic. Austin and Zavala have been in tight spots before, but this time it's not just their own skins they're trying to save--it's the lives of millions.

Filled with the high-stakes suspense and boundless invention that are unique to Cussler, Medusa is the most thrilling novel yet from the grand master of adventure.