1900 Continuing on from Galahad's Castle, an explosion underground has cut off the water supply in Whitehall resulting in three deaths. As Beau Preston, a Pinkerton agent, and Violet Leverton, are still chasing the theft of bearer bonds which are in the possession of Blinder and Urquhart, where will they go now. Is there a connection between the events. Holmes and the others must decide and follow their leads.
An entertaining historical mystery with its cast of likeable characters. Another good addition to this well-written and enjoyable series. ( )