Johnlock: The Diary

Sgt. Donovan once said: "solving crimes won't be enough. One day he will cross the line"
Of course solving crimes will not be enough for such a man like Sherlock. He definitely will cross the line one day, but the question is, in what angle?
A great meeting of the world's greatest colleagues. A wonderful meeting between the world's only consulting detective and the world's best brave doctor has took its positive results in the city of London, 221B, Baker street specifically.
Solving crimes and saving the lives, how do those two completely different types of power will get merged? Let's find out