2013's Layton Brothers: Mystery Room for mobile sparked grandest mystery to ever afflict the Professor Layton puzzle-adventure series: Who the heck settled down with the Professor and made a baby with him? To this day, we have no idea who brought Alfendi Layton into the world, and now we have one more Layton offspring to wonder about. Her name is Catriel Layton, and she's the star of the upcoming Lady Layton: The Conspiracy of King Millionaire Ariadne.
Whereas Mystery Room's gameplay hews closer to the "collect and present evidence" formula made famous by the Phoenix Wright series, Lady Layton's trailer indicates Catriel favors the puzzle-based narrative her father is famous for.
And speaking of the good Professor, it seems he's vanished. When Lady Layton opens, we learn the London-based Catriel hasn't seen so much as the brim of her father's tophat in ages, and she's in fact busy trying to track him down. It's a long, heavy job that's bogged down by Catriel's regular livelihood, which is a jack-of-all-trades detective. Whether you need to find a missing kitty or solve a grisly murder, Catriel will help out (hint: the cat probably did it).
The Layton series' detectives never work alone, and Catriel is no exception. Her partner in (solving) crime is Sharo, a talking Basset hound. Interestingly, Catriel doesn't merely read and translate animal sounds like Luke Triton. Sharo straight-up talks. Either London's been afflicted by some manner of weird apocalypse, or Catriel drank from the Thames is in the throes of a long trip through the events of Lady Layton.
We'll find out for sure in spring 2017 when Lady Layton: The Conspiracy of King Millionaire Ariadne comes to mobile and the Nintendo 3DS in Japan. The game hasn't been confirmed for an English-language release yet, but given the popularity of the Layton series in Western territories, it's a good bet we'll meet Catriel sometime next year.