The 6th Extinction (Sigma Force Series)

In a masterful epic of timeless mystery and ripped-from-the-headlines scientific intrigue, New York Times bestselling author James Rollins takes mankind to its endpoint, to a fate written in rock and ice in an event known as The Sixth Extinction.

A remote military research station broadcasts a frantic distress call that ends with a chilling message: Kill us all. When soldiers arrive to investigate, they discover everyone in the lab is dead—not just the scientists, but every living thing for...