Accompanied by Holmes and Watson, Mrs. Hudson crosses the ocean to attend the wedding of her cousin's daughter. They disembark to discover that the young lady's fiancé, a pitcher for the Brooklyn Bridegrooms, stands accused of an attempt on the life of JP Morgan and the death of his aide. A self-declared enemy of Morgan and the robber barons, the ballplayer ran from the scene of the crime and, when captured, was found in possession of a gun with two spent cartidges ... [So that the wedding can be held, Mrs. Hudson leads Holmes and Watson through an investigation that took them from JP Morgan's mansion to the lowest New York gambling dens. With the enthusiastic assistance of Samuel Clemens, the reluctant assistance of Morgan, and the cautious assistance of a leader in the African Broadway community, they find Morgan's attacker, block efforts to corrupt baseball, and save the lives of the prospective bride and groom.] -- Cover, page [4].