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. The curious fact that all their killers drove luxury vehicles, coupled with a baffling lack of any apparent motive, is enough to warrant the attention of LAPD detective Milo Sturgis and his frequent collaborator on the crime beat, psychologist Alex Delaware.