The rip-roaring new thriller in the NUMA series from the No. 1 Sunday Times-bestselling Grand Master of Adventure, Clive Cussler. A research ship is adrift off the coast of Antarctica... Weeks earlier, one of the crew messaged NUMA claiming to have made a world-shattering discovery. Followed by silence. Despatched to the icy waters Kurt Austin finds a sinking ship, crew murdered, vessel ransacked - and one research scientist missing. What was discovered? Who wanted it badly enough to kill everyone? And where did they vanish to? One way or another, Kurt's heading for Antarctica to learn the truth. Because someone is preparing to turn this secret discovery into a weapon of chilling power - unless Kurt finds them first...