Medusa by Clive Cussler and Paul Kemprecos is the 8th installment of the NUMA Files books.
This novel had a release date of June 2, 2009.
Medusa book description
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.
He has no idea what he’s just gotten them all 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 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.