The Hound of the Baskervilles is the nemesis of Professor Moriarty.
This character discovers that John Openshaw was murdered by the Ku Klux Klan in "The Five Orange Pips." In another work, this man proves that Jack Stapleton has been conniving to obtain the title family's fortune. He often infuriates Inspector Lestrade and the other detectives of Scotland Yard. This protagonist of (*) The Hound of the Baskervilles is the nemesis of Professor Moriarty. For 10 points, name this Arthur Conan Doyle creation, a detective who lives on Baker Street with his assistant, Watson.
This character discovers that John Openshaw was murdered by the Ku Klux Klan in "The Five Orange Pips.
{Sherlock Holmes} [or {Sherlock Holmes}]