When a petty thief falls though a glass roof in his attempt to escape from the police, what should have been the death of him marks the beginning of a while new life. After his broken body is reconstructed by an ambitious young doctor, he is released from prison, and, with the help of Victorian London's extensive sewer system, he becomes the most elusive burglar in the city.
1885: Five years after his release from prison, Montmorency is working undercover for the government. But his life, and national security, are threatened by his addiction to drugs. Can his friends restore his health in time to discover who is bombing London, and why, on the Scottish island of Tarimond, a whole generation of children has died?
Fleeing across a roof on a dark night in Victorian London, a thief crashes through a glass skylight to almost certain death. But an ambitious young doctor revives and reconstructs his shattered body, proudly showing off his handiwork at the Scientific Society where the city's intelligentsia meet. It is there that the robber picks up the key to a new existence, and on his release from prison begins to lead a double life.
1898: What looks like an easy job turns into a life-threatening nightmare as Montmorency and his friends pursue anarchists across Europe to the USA. Science, medicine and opera are entangled in his fight to save lives. But no one is safe in Montmorency's world.
Late 1901: After the cataclysm of the Paterson fire, Montmorency faces the most difficult challenge of his life. To protect the people he loves most, he is forced to do things that turn them against him. His own death may be the price of a greater good. But, trapped in a net of lies and secrets he cannot control, Montmorency must face that danger alone.
Dramatic historical events and action-packed adventure combine in Montmorency's most important mission yet. Montmorency is determined to hunt down the anarchist mastermind responsible for the shocking events at the end of book three. His search takes him to Italy, Paris and finally back to America, where Montmorency, his son Tom, and Fox-Selwyn's nephews become embroiled in an attempt to prevent the assassination of none other than the President of the United States.