"S'okay, Sammy..." Dean muttered, still holding his wrist to his brother's lips. He didn't know how much Sam would need or how badly he was hurt, but he was going to make sure Sam walked out of here.

He fought back a groan as he felt those silver bullets burning in his flesh. Across the room, the desperate sucking sound was still going. That was going to be one empty corpse when the vampire captive got through with it. Lucky for him, he'd been dead when the thing started feeding.

Idly, Dean wondered what his blood would do to Sam. Faster, stronger, healthier, sure... but, would he be loopy? Crazy? He hoped the blood wouldn't freak him out.