I’m just about to finish the second of this series of books new to the library and I am really enjoying the series. This is how the author describes the first book, Montmorency:
Montmorency is set between 1875 and 1880. This is the story of a small-time crook whose life is transformed after an accident that nearly kills him. An ambitious doctor (Robert Farcett) takes on the task of rebuilding his body, and shows him off at meetings of a scientific society. At those meetings, Montmorency learns about the new underground network of sewers under London. In prison, he plans a new life, stealing things all over London, and getting away through the smelly underground passageways. When he is released, he takes on two identities: Scarper in the Dark underground world, and Montmorency in high society. The book is all about his struggle to prevent each of his identities spoiling everything for the other.