A cruise ship becomes a floating bio-weapons lab when terrorists take over and use the plague that afflicts its passengers to create a worldwide pandemic. Sigma Force operatives race against time following the trail of a fabled explorer to crack the code of an astonishing mystery buried deep in antiquity and encoded in humanity's very genes.

As the plague decimates London in 1665 and an assassin threatens the apothecary's life, apprentice Christopher Rowe and his faithful friend Tom, following a trail of puzzles, riddles, and secrets, risk their lives to untangle the heart of a dark conspiracy.

"When authorities in Alaska receive a disturbing call from a teenage girl, their investigation leads them to discover an entire family of researchers dead. Joe Rush is called to help examine the bodies. On the surface, it looks like a brutal murder/suicide. But the situation is nowhere near that simple--nor is it over. Upon closer investigation, Rush discovers the terrifying truth. The research team has fallen victim to something that seems impossible...

"A deadly plague has struck Olympus and is slowly aging and killing the Olympians. Emily can only stand by and watch as those she loves fade and die. But in one last desperate attempt to save those she loves, she journeys back to Earth to face the CRU, then back in time to confront Cronus, leader of the Titans and father of the gods"--