The demon Wasistlos has been conjured up from the nether regions, and he’s not happy about it — because he’s now been possessed by the soul of a human! And to make matters worse, the human is a really nice guy! Wolff & Byrd intervene on the part of the poor human soul and must deal not only with the angry demon but a shyster lawyer, a small-time crook, and a shamanic children’s book author.