An entire city was being disrupted by a rash of senseless killings. When The Shadow began to investigate, he uncovered clues that only deepened the mystery. A strange, but beautiful girl who could disappear in a puff of smoke. An organization named C.Y.P.H.E.R., whose specialty was motiveless murder—and lots of it. Who was terrorizing the city of Santa Carla—and, more important, why? Here is crime so weirdly fashioned that it baffles even The Shadow, in his most challenging assignment to date.