SATAN'S SALESMAN is a novel by Matthew Davenport set in his Broken Nights universe while also functioning as a stand-alone horror novel. The premise of the novel is a simple but effective variant on the old Faustian pact. In exchange for your immortal soul, you can have anything you desire as long as it is within the "value" of your soul (measured in points). This kind of industrialized post-Wallstreet take on the powers of Satan. In this case, it reminds me very much of the Al Pacino movie THE DEVIL'S ADVOCATE which was very different from its novel.