Sam had thought all the other children like him had died two years ago. That they'd all been forced to fight like he had. That they'd all died at Ava Wilson's hand. But he'd been wrong. There was another survivor.

You.

The whole reason Sam had even found out about you was because of Ruby. The demon he was sleeping with... the demon who claimed to be helping him. But his work with her was a secret he kept from Dean.

That's why Sam went on his own to visit you. He needed to know how you'd survived... or if you'd even gone through the same things he had gone through. Now that yellow eyes was dead, he no longer got visions... but he needed to know if it was different for you. If you had abilities of your own.

So, he got your address, left in the middle of the night so Dean wouldn't know, and found himself on your doorstep...