In the Micronesian islands, a top secret, U.S. government-sponsored undersea lab conducting vital biomedical research on the rare blue medusa jellyfish disappears. At the same time, off Bermuda, a bathysphere is attacked by an underwater vehicle. Only Kurt Austin can save its passengers from a watery grave. Austin, suspecting a connection between the two mysterious events, puts the NUMA team on the case.

          He has no idea what he’s gotten them into — a hideous series of medical experiments . . . an extraordinarily ambitious Chinese criminal organization . . . a secret new virus that threatens to set off a worldwide pandemic. Austin and NUMA have been in tight spots before, but this time it’s not just their own lives on the line — it’s the lives of millions.