In Other Words... Murder: Holmes & Moriarity 4, Paperback

Mystery author and sometimes amateur sleuth Christopher Holmes is settling into domesticity with his sometimes rival, sometimes nemesis J.X. Moriarity when he learns a body has been discovered in the backyard of his former home.

To complicate matters, Christopher's ex turns up accusing Christopher of doing away with his former personal assistant--the man David dumped him for.

It's life as usual at Chez Holmes. In other words... Murder.