Detectives Don't Grow Wings

Sherlock Holmes, the great detective, has managed yet again to attract some unwanted attention. And this attention came in the form of a strange man in an alley with a syringe. Who knows what it'll do? The end is coming, and the new generation must be prepared to pull humanity out of the rubble. Eventual Wing!Lock, and some *possible* Johnlock in there, but I'm not sure yet.