"Sex, Stars, & Serpents"
Sophie hooks up with Jack Faust to better learn magic, and, per the terms of Jack's bargain, Promethea and he must get considerably more...intimate.
The experience is surprisingly positive for both Sophie and Promethea, and they earn enlightenment and an ally in the process.
Meanwhile, Mayor Sonny Baskerville's demon infestation is making itself more and more evident.