William Griffin, the author of this enormously witty epistolary novel, takes his cue from C. S. Lewis. Like Lewis's beloved Screwtape Letters, the letters of a master tempter to his protege, this novel contains a packet of letters from one devil to another. The correspondent is an accomplished young demon named Fleetwood. He's taking a break from his high-powered position in the American mass-temptation industry to answer his uncle's challenge to...