An epic saga of the Dark Angels! Mystery lies at the heart of the sons of the Lion. Striking across the galaxy from their space-going fortress-monastery, the Rock, they defend mankind while constantly hunting their ancient enemies, the Dark Angels who turned to the Chaos Gods in the Horus Heresy. Where one of these Fallen is found, the Chapter descends, and no one is safe until the traitors are brought to justice. This series tells the tale of a hunt for the Fallen that embroils the Chapter in a plot to change the past and future and bring about the dominion of Chaos over the Imperium. This omnibus contains the novels Ravenwing, Master of Sanctity and The Unforgiven, plus the anthology Lords of Caliban, which consists of the short stories Honour of the Third, A Hunt in the Dark, Battle-Brothers, Accept No Failure, Holder of the Keys and All Must End.