Welcome to 1920's Britain, where cats and dogs have a voice and are treated as equals to humans. In the quaint village of Upper Much-Mousing, one lucky young cat named Erin Chumley inherits an old Manor house and Estate. But with it comes responsibility and bills, and Erin must navigate her new life with the help of her housekeeper and tutor, Mrs. Hudson, a retired Army veteran with a mysterious past.

Together, Erin and Mrs. Hudson start a detective agency to earn funds and teach Erin about the world. Their latest case takes them to the bustling city of London, to the famous King Herod's Department store. Three kittens have gone missing, and it's up to our dynamic duo to solve the case. But what starts as a simple investigation quickly turns into a dangerous race against time, as they must save the kittens from the clutches of the evil and lazy Anders, the store's nighttime security guard. As they dig deeper, they uncover a sinister black-market gang stealing from the store, and must also help their feline seamstress friend, Jenifer Darcy, get the recognition she deserves for her work.

Join Erin and Mrs. Hudson on their witty and whimsical adventure, filled with action, fun, and heartwarming moments. Perfect for younger and middle grade readers looking for a fun and exciting read.