In the competition to save among their own, Sigma Force must wrestle with the deepest spiritual mysteries of mankind in this mind-expanding adventure from your #1 New York Times bestselling author, told with his trademark mixture of leading edge science, historical mystery, and pulse-pounding action.

Arriving house on Xmas Eve, Commander Gray Pierce discovers his house ransacked, his pregnant lover missing, and his top friend’s wife, Kat, unconscious on your kitchen floor. With no shred of proof about Crucible: A Thriller to check out, his one hope to find the girl he adores and his unborn child is certainly Kat, the only witness from what happened. However the hurt woman is in a semi-comatose state and cannot speak-until a brilliant neurologist presents a radical method of “unlock” her brain long enough to ask a few questions.

What Pierce learns from Kat sets Sigma Force on a frantic quest for answers that are linked to mysteries getting back to the Spanish Inquisition also to one of the most reviled and blood-soaked books in individual history-a Medieval text message referred to as the Malleus Maleficarum, the Hammer of Witches. What they uncover concealed deep before will reveal a terrifying truth in the present and a future around the brink of annihilation, and pressure these to confront the ultimate question: Exactly what does it mean to truly have a soul?