This was it. The moment Heaven and Hell would clash. But which unearthly being would win? The fallen angel or Hell's hounds? Overtaken by fear, I close my eyes. Kayson is a Fallen Angel who has spent decades running from the Hell Hounds while searching for something that no one else believes can be so, not even God. Kayson is determined to find a Blood Child. But when a hound finds Kayson first, he is sure his end has come. Falon, Alpha of the Hell Hounds, destroyer of the blood children, and devoted believer in his master's plan, is bound and determined to drag Kayson back to Hell with him. Sabrina is a Vampire, a half-breed created from one of Lucifer's original blood children. After years of hiding, Sabrina's fate changes when she finds Kayson barely alive. Against her instincts, Sabrina saves him. Now she and Kayson are both marked by the Hell Hounds. Emma is an ordinary human, whose only problem is making ends meet, and getting over the hurt caused by her untrustworthy brother. Her everyday problems become supernatural ones when she finds Kayson and Sabrina hiding in her parent's backyard shed. Kayson, Sabrina and Emma are unlikely allies, thrown together by chance to fight against the most powerful creatures of the underworld in order to follow their world-changing quest. But will the broken faith of one break the faith of all?