Dave Toschi

David Ramon "Dave" Toschi (July 11, 1931 – January 6, 2018) was an American inspector in the San Francisco Police Department. He was born in San Francisco, California. 
Toschi served at the police department from 1952 to 1987. From 1966 to 1978 he was assigned to the S.F.P.D. homicide detail. He was best known for his role as a chief investigator in the Zodiac Killer case, which he and partner, Inspector Bill Armstrong, began to work on after the murder of taxi driver Paul Stine.
Toschi served as the inspiration as Harry Callahan in the movie "Dirty Harry".
Toschi died of complications from Alzheimer's disease on January 6, 2018 in San Francisco at the age of 86.