Research is the strong suit of this book about darkly handsome Richard Ramirez, who terrorized Los Angeles for 14 months in 1984-85 with his penchant for breaking into homes dressed all in black, where he fiercely assaulted, sodomized, robbed, and (in 13 cases) murdered his victims. Carlo spent more than 100 hours interviewing Ramirez on death row, more than a month in El Paso, Texas, talking to Ramirez"s family and friends, and another month hanging out with the two detectives who solved the case. He made visits to all 19 crime scenes in the middle of the night. His narrative maintains a steady focus on Ramirez, drawing no conclusions about his Satanism or his mental pathology and simply letting his appalling deeds and words speak for themselves. The trial and post-trial sections are long but interesting, covering Ramirez"s rage attacks and his many "groupies" (one of them a juror!), especially Doreen Lloyd, whom he married in September 1996. (This reviewer found Philip Carlo"s book much better than Clifford L. Linedecker"s Night Stalker.)