The Judas Strain

A judas strain is an organism that drives a species to extinction. From the Indian Ocean depths, an ancient menace plagues the modern world. Hope hides "within the language of angels." Aboard a cruise liner cum makeshift hospital, Dr Lisa Cummings and Monk Kokkalis, SIGMA agents, seek answers. But terrorists hijack the mercy ship for a floating bio-weapons lab.
4 July party a world away. SIGMA commander Gray Pierce thwarts an assassin who holds the first clue to a cure. He joins with her to follow the trail of Marco Polo. The quest winds through Venetian tombs, Byzantine cathedrals, and jungle-encrusted ruins. A relentless madman dogs every step. As seconds tick closer to doomsday, Pierce can trust no one. Any could be a Judas.
James Rollins
James Rollins is a #1 New York Times bestselling author of international thrillers that have been translated into more than forty languages. Known for unveiling unseen worlds, scientific breakthroughs, and historical secrets, Rollins has a knack for breakneck pacing and stunning originality that has been hailed by critics and embraced by millions of readers around the world.
Sigma Force
Series contains 18 primary works and has 23 total works. Current series reading order on below.