When Sam got his soul back from the cage, it was clear he had come back a little worse for wear. Dean had told you not to worry about it, and you tried to put it out of your mind, but you couldn't help but notice the way Sam was jumpy. He'd flinch at physical touch, and he would instinctively reach for a weapon when someone moved too quickly. It was obvious he wasn't okay.

One night, while you were researching a case, you noticed the way Sam stared off into space. It unnerved you a bit.