Hidden in plain sight

Being a hunter is dangerous, every hunt you go on could be your last. People who hunt don't live long, they go out in a blaze of glory fighting the things that you don't know about. My brother and I used to hunt together, but he got hurt. I sold my soul to save him and when my ten years were up I was dragged to hell. That was in 1681, it is now 2014. I am still a hunter, really good at it too. I met the Winchesters a few years back, I was just called my Sam to help find Dean. But they don't know my secret.