The thing thought he was dying and Sam was doing his best not to change its mind. The gory wound on his throat helped.
Fighting to remain conscious, he watched through veiled eyelashes as the creature paced on the other side of the trash-strewn alley, its agitation increasing with every movement.
When the growl of the Impala coming up the street filled the night, Sam saw the monster fade back into the shadows, only its eyes visible as it waited.
The Impala stopped just outside the alley. Sam heard a door open and close.
"Sam?"
"Dean!" Sam struggled to rise. "Vampire!"