1864 and, once again, Inspector William Monk, now of the Thames River Police, must face a dangerous foe. After a game of cat and mouse, Monk has finally captured Jericho Philipps, main suspect in the brutal slaying of mudlark Water 'Fig' Figgis. In doing so he believes that he has taken the first step in bringing to justice the man responsible for running an evil child prostitution ring and avenged the memory of Durban, his old commander, who was convinced of Philipps' guilt.
A superintendent in the Thames River Police, William Monk is on a patrol boat near Waterloo Bridge when he and his men notice a young couple standing at the railing, apparently engaged in an intense discussion. The woman places her hands on the man's shoulders. Is it a caress or a push? He grasps her. To save her or kill her? Seconds later, the pair plunges to death in the icy waters. Has Monk witnessed an accident, a suicide, or a murder? The ensuing investigation leads him toward a conspiracy that reverberates into the highest levels of Her Majesty's government.
When the Maude Idris docks at the Pool of London, laden with ebony, spices and first-grade tusks of ivory collected from her voyage to Zanzibar, Clement Louvain leaves four armed seamen on board to guard the precious cargo. But as soon as the relief for the night watch arrives ready for duty in the morning, he finds the ivory gone and one of the seamen dead. Hindered by his ignorance of the river and its customs, and ashamed of the fact that he so badly requires the huge fees that Louvain is prepared to pay, William Monk nevertheless begins his investigation into the theft and murder.
When two women are found strangled in the studio of a London artist, including the wife of Dr. Kristian Beck, who is accused of the killing, William Monk, his wife Hester, and their close friend, Lady Callandra Daviot, set out to clear their friend's name.
Ritual murder, mysterious disappearances, and theft spur Victorian investigator William Monk and his wife Hester to investigate an arms dealer and his seemingly flawless London mansion.
