Dirty Harry local and federal police committing offences and overstepping their authority by entrapment and obstruction of justice. Author McGilligan, argued that America needed a hero, a winner at a time when the authorities were losing the battle against crime. The box-office success of "Dirty Harry" led to the production of four sequels. In the 2007 film "Zodiac", also set in San Francisco and inspired by the Zodiac Killer, cartoonist Robert Graysmith approaches police detective Dave Toschi at the cinema, where he is watching "Dirty Harry" with his wife. When Graysmith tells Toschi he is going to catch the Zodiac killer, Toschi
Dirty Harry (character) shot, while Fanducci is dead (in "The Enforcer", reference is made to the fact that Fanducci was killed in 1968). His partner in "Dirty Harry", Chico Gonzalez, is shot by Scorpio and though he survives, he decides to quit the police (in "Magnum Force", Harry remarks that Gonzalez became a college teacher after leaving the police force). His partner in "Magnum Force", Earlington "Early" Smith is killed by a bomb planted in his mailbox. Kate Moore in "The Enforcer" is killed by terrorists while saving Callahan's life. She had previously cited to Harry Fanducci and Smith's names, to demonstrate that