Caught off Guard (Sherlock BBC)
Life is full of mysteries that need to be solved, and people that need to be fixed, but there never seems to be anyone there to do anything about it.
Erin White noticed, and decided to do something about it. Her job was to go around and catch the badguys, solve the mysteries, and fix the problems. Nobody was supposed to know that she existed.
You could compare her to a cloud, floating along with the rest of the croud, waiting to see where you have been brought. Going the same direction all the time until suddenly you are turned by the wind, and are forced to live a new life, going in a new direction.
She was the cloud, and Sherlock Holmes was the wind.