Summoning Sin

Elderoy Tipple is lonely, horny, and was recently dumped, but he is also in possession of a spell book that will allow him to summon an incubus. Rather than sit around and bemoan the fact that he's lost his lover, Archie, Elderoy decides to do the spell, have one wild night of demonic sex, and then banish the creature back to Hell.

But when things go wrong, Elderoy finds himself not just in the incubus's sexual thrall, but losing his life force as the demon draws it out of him orgasm by orgasm. With the demon keeping him from enacting the counter spell, and no one to save him, how will Elderoy escape the incubus's clutches?