Layton Mystery Detective Agency: Kat's Mystery‑Solving Files
The story is set in London and follows Katrielle as she solves mysteries with her talking dog Sherl.


The Agency trio's trip to the Marylebone Museum of Art to see the famous Mona Lisa takes a strange turn when Katrielle is informed that the museum's entire collection has been surreptitiously replaced with an array of Lisa-centric works.