Layton's Mystery Journey: Katrielle and the Millionaires’ Conspiracy revamped as Deluxe Edition with multiple improved features! The game centers on Katrielle Layton, the daughter of famous archaeologist and puzzle-solver Professor Hershel Layton. With the help of her assistant Ernest Greeves, she solves cases in and around London, alongside a talking dog that, for reasons unknown, only the two of them can understand.