John looked in surprise at Sam. Normally the boy would be happy to stay behind so he didn't miss any of his classes. He fought to stay behind.
"Sammy," Dean started, looking guilty. "It won't be for long. You're not strong enough for a hunt like this. You'll be safer staying back – "
Sam laughed harshly. "Like I was safe before?" His hand flew up to his neck, touched the slowly fading scars.
"Sammy – "
Furious, Sam turned on his father. "You said to wait until Dean or you came to get me from school. You didn't come. He came."