Picking up where BATMAN ANNUAL #27 left off! A lock without a key. A murder mystery whose solutions could lead to countless deaths. An answer in search of - the Question! Renee Montoya must help Batman save Robin from Amon, the Sixth Sinner, while keeping the fanatic killer from uncovering a 2,000-year-old religious secret. But is Azrael willing to risk Robin's life in order to see this secret revealed? "The Eighth Deadly Sin" sets the stage for this month's premiere issue of the AZRAEL ongoing series!