Dirty Harry is a 1971 American action thriller film that follows Inspector "Dirty" Harry Callahan (Clint Eastwood), a maverick San Francisco police detective who is assigned to track down a psychopathic killer known as the "Scorpio Killer" (Andrew Robinson).

Here's a summary:

 The Scorpio Killer: This serial killer terrorizes San Francisco by randomly murdering people and leaving taunting notes. He kidnaps a young girl and demands a large ransom.

 Harry Callahan: Assigned to the case, Harry is a tough, no-nonsense cop who often disregards rules and procedures to get the job done. He clashes with his superiors and the city's liberal establishment.

 The Chase: Harry pursues Scorpio relentlessly, using unconventional methods and often skirting the law. He engages in dangerous confrontations with the killer, leading to a series of intense cat-and-mouse chases.

 Moral Ambiguity: The film explores themes of vigilantism and the ends justifying the means. Harry's methods are controversial, raising questions about police brutality and individual rights.

 The Confrontation: The film culminates in a dramatic showdown between Harry and Scorpio, where Harry ultimately confronts the killer and makes a controversial decision.

Dirty Harry was a groundbreaking film for its time, known for its gritty realism, intense action sequences, and Clint Eastwood's iconic portrayal of the anti-hero. It sparked debate about law enforcement, civil liberties, and the nature of justice.