There are 2 books in the Patrick de Courvoisier series.
The Patrick de Courvoisier series does not have a new book coming out soon. The latest book, The Case of the Missing Madonna (Book 2), was published in January 2016.
The first book in the Patrick de Courvoisier series, The Case of the Black Pearl, was published in July 2014.
The Patrick de Courvoisier series primarily falls into the Private Investigator genre.