From The Internet Movie Plane Database
Clint Eastwood (Police Inspector Harry Callahan)
Andrew Robinson (Charles 'Scorpio' Davis)
Reni Santoni (Police Inspector Chico Gonzalez)
John Vernon (The Mayor)
Harry Guardino (Police Lt. Al Bressler)
San Francisco is terrorized by a psychopathic sniper called Scorpio. A case is assigned to Inspector Harry Callahan, known from his uncompromising working methods and casual approach to the bureaucratic law.