Batman: Sword of Azrael #4

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Azrael. Batman. The demon Biis…their three-way conflict ends in a fiery cataclysm beneath an oil refinery in the Southwestern USA. What emerges are two new allies, separated by a shadow of violence, bound by a shared secret…the identity of the man behind the Dark Knight's mask! The conclusion to this miniseries leads into Batman (1940) #488.