Dane Hartman. City of Blood (1982) (Dirty Harry #6) 192 pp. [pbo]
Publishers description: Only Dirty Harry Callahan can stop the Snuff pyscho on his Frisco rampage! Winos brutally slain on San Franciscos skid row. Beautiful young women butchered in the act of sex by a perverted killer. The acts of two men—or one? Not even Dirty Harry knows. But hes going to find out, if he has to break every law to do it. From Friscos sexual underground to the boardrooms in the citys sky, Harry plunges into a blood-streaked manhunt that will leave only one survivor.
Setting: San Francisco