DC Comics - The Legend of Batman Vol. 016 Knightfall: Prologue HC

The Dark Knight has found out the existence of a modern-day avenging angel who is the mysterious assassin, Azrael. 

The Knightfall Prologue Book captures the attempt to track down the arms dealer Carleton LeHah, but the game changes when he is possessed by the power of the demon Lord Biis, the ancient enemy of Azrael. Close to physical collapse, Batman also faces a new menace – as from the far-away isle of Santa Prisca, an evil genius with monstrous strength arrives to take his crown… Bane.