The Man of Maybe Half-a-Dozen Faces by Ray Vukcevich
The first victim is found dead with a number painted all over his body. The second victim is also murdered by strangulation with a computer printer cable. And there seems to be something fishy about beautiful Prudence Deerfield, the woman who brings the case to Skylight Howells. Skylight confers with Dennis, and they both discuss the case with Scarface, Dieter, and Brian Dobson's other personalities before taking the case. Once they do, we're in for one of the wildest, wackiest mysteries to come down the pipe in years. You won't need six heads to crack this case, but they probably wouldn't hurt.