 The debut of SFPD Inspector Harry Callahan begins with a sociopathic rooftop sniper (Andrew Robinson of  Cobra  and  Hellraiser ) killing a young woman in a pool, and then trying to extort $100,000 from the City. Harry is asked by his boss, Lt. Bressler (Harry Guardino) and the Mayor (John Vernon) to put a stop to this low-life. While Harry & his new partner, Chico (Reni Santori of  Cobra ) investigate, another murder occurs, followed by a kidnapping/rape of a young girl, and a subsequent attempt at extortion by the killer, who calls himself  Scorpio . Harry volunteers to deliver the ransom but is nearly killed by Scorpio, who is wounded & driven off by Chico and Harry. Harry follows the suspect s trail to Kezar Stadium, where he discovers the murder weapon and the suspect! The man is arrested and Harry gets the girl s location out of him. Unbeknownst to Harry, the girl is dead already, and the next morning Harry visits the D.A. to find out that the man is being freed - because of a bleeding-heart legal system and judiciary that says Harry s search was  illegal , although there was no time - and no judge - to get a warrant from. On his release, Scorpio is up to his old tricks - this time he kidnaps a bus-load of children and demands a ransom. The Mayor foolishly goes along with Scorpio s game and orders Harry not to stop the killer. Disgusted with the weak-kneed attitude of the Mayor & his colleagues in the legal system, Harry intercepts the bus and takes on Scorpio himself to put an end to the kidnapping and the psychopath s reign of terror...for good.