After being called for a case consisting of the murders of the inhabitants of Number Four Privet Drive, Sherlock finds a boy hidden under in a cupboard under the stairs. Eight years later, a mysterious boy comes to Hogwarts and takes the whole wizarding world by storm. Yet no-one can find Harry Potter anywhere. What's become of the Boy-Who-Lived, and just who is the Holmes prodigy?

When Violet Evans, older half-sister of Lily Evans Potter, discovered how her nephew, Harry, was being treated, she whisked him away without a second thought. Now, without a place to keep him safe, she turns to an old childhood friend, Sherlock Holmes.

What if Sherlock Holmes came across Harry Potter after the Dursleys had left him for dead? Based on a prompt from WRose. Starts at the beginning of Prisoner of Azkaban and Sherlock takes on a paternal role for our young wizard. Rated T for violence.