After leaving him, he went to the Cable Car Barn for a secret and very brief exchange with another one of the slaves, who emerged from the underground to pass him a note. The note told the Dragons that they almost reached Life; the Dragons must help them reach Hell and the slaves will show them Freedom.
Unfortunately, before the dragon could leave and bring the note back to his fellow Dragons, Phil Cook and one of his rat allies enter and kill him. They left his body in a pile of other slave corpses.
The Manhunter visited the Barn and found his corpse with the slave's note.