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Outside Seattle, the Executioner discovers a Mafia plot to dominate the world On a remote island in Puget Sound, a millionaire's house has been sold to the mob. The dock has been lengthened, security has been tightened, and men with guns have been scattered across the shore. Late on a moonlit night a figure in black drops in from the sky. He is Mack Bolan, the Executioner, whose one-man war against organized crime has carried him to Seattle. He will not like what he finds.   Beneath the main house, Bolan discovers a sprawling underground bunker being dug into solid rock. This is the Mafia's newest firebase--a fortified compound from which to control shipping traffic across the Pacific Ocean. If the mob can control shipping, it has a chance to control the world, unless Bolan finds a way to push this island fortress back into the sea. Firebase Seattle is the 21st book in the Executioner series, but you may enjoy reading the series in any order.