Use what is used against you to your advantage. You can make any situation go in your favour by doing this simple step: take what your enemy is giving you, and use it.

"What are you doing in 221 C?"

You need to use it in your favour, and you will get everything you want.

"I actually don't remember coming in here. Sherlock, do you remember anything?"

Manipulation. Make people think what you want them to think. Fool the most intelligent and brilliant people in the world.

"No, I don't."

They won't always believe you,

"Are you sure you don't remember anything, Emma?"

So make them.

"I don't even know what day it is."

Cry, if you have to. Lie, if you have to. Do whatever it takes.

"Come on, let's go back upstairs."

Hide in the shadows if you get to see how someone will react.

"Yeah, let's go."

And if you are the enemy, make your next victim think they are ahead of you, that they get to choose what's going on. When in reality, you're the one that put the note there. The one who set up the Apple watch all by themselves and sent the threatening text messages.

Be the one that is always one step ahead, even if that means hiding in an abandoned flat right underneath their noses.