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 the iconic music for both the theme of "" and the "Bullitt" soundtrack, and who had previously collaborated with director Don Siegel in the production of "Coogan's Bluff" and "The Beguiled", both also starring Clint Eastwood. Schifrin fused a wide variety of influences, including classical music, jazz and psychedelic rock, along with Edda Dell'Orso-style vocals, into a score that "could best be described as acid jazz some 25 years before that genre began". According to one reviewer, the "Dirty Harry" soundtrack's influence "is paramount, heard daily in movies, on television, and in modern jazz and rock music". The film caused