Secrets of Redemption
Must be read in order.
The Girl Who Wasn’t There (tentative release date January 2023)
The Room at the Top of the Stairs (tentative release date May 2023)
The Secret Diary of Helen Blackstone (prequel but can be read at any time).
The Third Nanny is a standalone, separate book.
Charlie Kingsley Mysteries
Can be read as standalones, but you may enjoy the series more reading them in order.
Loch Ness Murder (also included in the Mysteries, Midsummer Sun and Murders cozy mystery anthology and can be read as a standalone).
Red Hot Murder (tentative release date April 2023)
A Grave Error (prequel that can be read at any time).
The Riverview Mysteries
Standalones.
Today I’ll See Her (short story).