The Kier and Levett series does not have a new book coming out soon. The latest book, Revenge in the Rogue's Hideaway (Book 4), was published in April 2024.
The first book in the Kier and Levett series, A Killer in the Crystal Palace, was published in February 2023.
The Kier and Levett series primarily falls into the Cozy Mystery and Historical genres.