During the summer, sixteen year-old Francis Clarke goes to Britain of the hopes of interning for his career choice, much to his mother's disdain, as a detective. It is there he meets the consulting detective, Sherlock Holmes and his partner, John Watson.
Despite warnings from other on the team, he continues working with him, he even starts a sexual relationship with Lestrade and him. That is, until there is one case where they aren't trying to find the killer; the killer has already found them.
The killer was Sherlock.