Sam had tried so hard to escape the hunting life and the supernatural world. He had left the world behind when he was 18. But it seemed that the past had come back to haunt him the year he turned 22. He had been at Stanford. He had a girlfriend too. Jessica. But he started getting strange visions of her dying in a supernatural way. At first, he thought they were nightmares. That was until Jessica faced the fate from his nightmares in real life.
Sam got back into hunting so he could track down the thing that killed Jessica and his mother with Dean. It had been a year since the incident and Sam was still getting random visions on occasion of people that were also connected to yellow eyes somehow.
You were one of them.
Sam got a vision of you dying in a brutal way, so he and Dean tracked you down and were now knocking on your front door, pretending to be HOA so they could get close to you and get answers...