August Adams has failed his family before. He's sacrificed relationships in pursuit of adventure, fame, and money. Now the very lives of those he loves depend on his ability to decipher a centuries-old puzzle encrypted in the colorful hand-painted illuminations that adorn three rare Gutenberg Bibles. It's a secret that could yield unimaginable wealth, undermine two major religions, and change the course of Western civilization. Two ruthless, ancient organizations are willing to do anything to get their hands on it. And August has the span of one transatlantic flight to figure it out.

MATT BRONLEEWE MIXES THE THRILLS OF JAMES ROLLINS AND THE HISTORY OF STEVE BERRY INTO AN EXPLOSIVE COMBINATION." Eric Wilson author of Field of Blood and A Shred of Truth MATT BRONLEEWE'S ACCLAIMED FIRST NOVEL WAS THE PERFECT BLEND OF NATIONAL TREASURE, INDIANA JONES, AND 24. NOW HE RAISES THE STAKES WITH HOUSE OF WOLVES. Yesterday was August Adam's birthday. It didn't go well. Today is worse. He's being chased, slashed, lied to, knocked out, shot at...and tied up with his ex-wife and young son in the freezing belly of a plane on the way to the bottom of the world. All because of a very rare book with a secret, a Nazi plan that's been in deep freeze for half a century, and an ancient, power-hungry underground organization with eyes on a holy and possibly deadly prize. The implications are both global and intensely personal. Because unless August Adams figures it all out soon, no one near him will live to see tomorrow.

August Adams can't escape the mysteries and dangers surrounding rare books."Kill them all. God will recognize his own. "These words were spoken at the dawn of the 1209 Cathar Crusade, a war devised to wipe out the most widespread heresy in Europe. But the Cathars held a secret—a mysterious book they kept in hiding.Now it's 2009. August Adams wakes in a pool of blood that isn't his. Without a chance to seek answers, he immediately faces his greatest a serial killer who seems to select his victims at random. As the clues build, and as August begins to uncover the unbelievable truth, he finds himself neck-deep in a conspiracy that spans centuries. Soon, everything and everyone he loves is in the killer's crosshairs, with no escape in sight.The chase leads from the dark catacombs of a mysterious New York museum to the ancient battleground of a legendary French castle. What August discovers could set history on a bold new course . . . or send it down a path of destruction.