David Ramon "Dave" Toschi (born July 11, 1931) is a former inspector in the San Francisco Police Department, where he served from 1952 to 1983. He is best known for his role as a chief investigator in the Zodiac Killer case, which he began work on after the murder of taxi driver Paul Stine.Shortly after he left the S.F.P.D., Dave was the Director of Security for St. Luke's Hospital in San Francisco's Mission District.