In The Great Ace Attorney Phoenix Wright ancestor Ryuunosuke Naruhodou travels to London for a case and happens upon Sherlock Holmes.
Okay, maybe they meet up intentionally. I've no idea because the video below is in Japanese and I do not speak the language.
The video, which came out of TGS 2014 this week, also shows the 8yo Watson who is a little girl named Iris along with the new “Joint Reasoning” gameplay element.
The Great Ace Attorney still hasn’t been confirmed for localization, but the 3DS title will release in Japan sometime next year.