<p>Accompanied by Holmes and Watson, Mrs. Hudson crosses the ocean to attend the wedding of her cousin&#39;s daughter. They disembark to discover that the young lady&#39;s fianc&eacute;e, 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 cartridges, the same number and caliber as that used in the attack. Before a wedding can be held, the unacknowledged sage of Baker Street will lead Holmes and Watson along a path of investigation taking them from JP Morgan&#39;s mansion to the gambling dens of New York&#39;s Tenderloin. 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 will identify the financier&#39;s attacker, frustrate efforts to corrupt the game of baseball, and rescue the prospective bride and groom from would-be assassins before returning finally to the comparative quiet of 221B Baker Street</p>