There are 4 books in the Charles Dodgson & Conan Doyle series.
The Charles Dodgson & Conan Doyle series does not have a new book coming out soon. The latest book, The Problem of the Surly Servant (Book 4), was published in July 2001.
The first book in the Charles Dodgson & Conan Doyle series, The Problem of the Missing Miss, was published in May 1998.
The Charles Dodgson & Conan Doyle series primarily falls into the Historical Mystery genre.