Frank Peretti, whose books have sold more than 12 million copies, is the author of Monster as well as the international bestsellers The Oath and This Present Darkness. The Oath (1995) has sold more than a million copies and was awarded the 1996 ECPA Gold Medallion Award for best fiction. Peretti lives with his wife Barbara in the Pacific Northwest. Visit his website at www.frankperetti.com.

Ted Dekker is the New York Times best-selling author of more than25 novels. He is known for stories that combine adrenaline-laced plots with incredible confrontations between good and evil. He lives in Texas with his wife and children. Twitter @TedDekker, facebook.com/#!/teddekker