Every Holmes has a Gift

The door peeked open, and out stepped a young man John had never seen before. He reminded him of someone, with his pale skin, high cheekbones, and dark hair… Even if it was straight instead of curly behind his oversized ears and his eyes were a darker blue than he was used to... Sherlock gave a weak smile at John's shocked expression. "John, meet my little brother, Merlin Holmes."Merlin is Sherlock's little brother, and shows up at the flat looking for somewhere to stay after a reveal gone horribly wrong. Meanwhile, the game is afoot as the three investigate a mysterious blue box that keeps showing up alongside various murders around London.