Bertie and the Tinman by Peter Lovesey.
The book is being released by Soho Crime on January 14, 2020.
The book's jacket copy says: Introducing Victorian England’s most illustrious amateur sleuth (if not necessarily its most adept): Bertie, Prince of Wales, who can’t help but poke his royal nose into a suspicious-sounding circumstance.
Bertie, Prince of Wales and future King Edward VII, is a charismatic but self-indulgent man who enjoys the finer things in life, including dining, flirting, and flitting from party to party with his entire thirty-person staff in tow. But the fun and games come to a tragic halt when Bertie hears the shocking news that his friend the legendary jockey Fred Archer, known as the Tinman, has taken his own life. Bertie has his doubts that it was in fact suicide, especially considering the Tinman's ominous final words: “Are they coming?” Bertie resolves to discover the truth, looking for new suspects and evidence on a quest that will take him through some of the most disreputable parts of London, much to the dismay of his mother, Queen Victoria.