A Sherlock Adventure (Sherlock Short Story)

You're sat in French class, bored as anything, when a beautiful man with razor-sharp cheekbones and curly black hair appears at the window. Sherlock Holmes whisks you away on a magical adventure, back in time 20 years where you meet a certain psychopath-in-the-making...
James Moriarty.
And he's pretty pissed that you're friends with his mate, Carl Powers...