In a masterful epic that combines timeless mystery and ripped-from-the-headlines scientific intrigue Rollins takes humankind to its endpoint, to a fate inscribed in rock and ice in an event known as THE 6TH EXTINCTION. Life always finds a way. . . .A military research station buried in the remote Mountains of Northern California broadcasts a frantic distress call that ends with a chilling order: "There's been a breach. Failsafe initiated. No matter the outcome: Kill us All!"