Kellerman, Johnathan: Compulsion (Alex Delaware #22)

A tipsy young woman seeking aid on a desolate highway disappears into the inky black night. A retired schoolteacher is stabbed to death in broad daylight. Two women are butchered after closing time in a small-town beauty parlor. These and other bizarre acts of cruelty and psychopathology are linked only by the killer’s use of luxury vehicles and a baffling lack of motive. The ultimate whodunits, these crimes demand the attention of LAPD detective Milo Sturgis and his collaborator on the crime beat, psychologist Alex Delaware.

What begins with a solitary bloodstain in a stolen sedan quickly spirals outward in odd and unexpected directions, leading Delaware and Sturgis from the well-heeled center of L.A. society to its desperate edges; across the paths of commodities brokers and transvestite hookers; and as far away as New York City, where the search thaws out a long-cold case and exposes a grotesque homicidal crusade. The killer proves to be a fleeting shape-shifter, defying identification, leaving behind dazed witnesses and death–and compelling Alex and Milo to confront the true face of murderous madness.