In a breathtaking debut drawing on complex science and recently discovered deep-sea biology, Kent Lester has married fast-paced narrative and cutting-edge, reality-based science to produce an edge-of-the-seat thriller. A seemingly random murder off the Honduran coast leads scientist Dan Clifford to a massive corporate conspiracy. Illegal, automated, undersea operations have unwittingly awakened a primordial organism that turns host organisms into neurotoxin factories, wreaking havoc with aquatic life and the nearby human population. This maleficence threatens to trigger a worldwide outbreak that could end in human extinction, the Seventh Sun of ancient myth. When the CDC and the full resources of the U.S. biological threats team fail to uncover the source of the devastation, Dan and a brilliant marine biologist, Rachel Sullivan, must plumb the deeps and face an unimaginable, ancient horror in the murky depths. It's up to them to stop this terror before a determined multi-national corporation unleashes death on an unsuspecting world.