Yuukoku no Moriarty OVA

William James Moriarty becomes intrigued by a news article about a vandalized painting with an artist from his childhood past. The article leads him to investigate further in Bath, where he meets with a person claiming to be that artist, but Moriarty is unsure if it's truly the man he remembers. He teams up with Sherlock Holmes and John H. Watson to uncover the truth.