Knowing
Watching, waiting, all the time paying attention. Listening to people. Letting them think I know nothing and if I did, then, well, letting them think I will say nothing. This is true to a point. I won't say anything until I have evidence to back up what I say and even then no one will know it is me. My target will still think I'm a much needed friend in need for months after they have had there bank accounts...