Dirty Harry is my favorite movie
Then I suppose you must enjoy action crime thriller type films, right?
I do but Dirty Harry is my all time favorite
I liked that it drew upon the actual case of the Zodiac Killer. It made the movie so interesting.
Yes and I loved Clint Eastwood in it as well
Yup he played his role as San Francisco Police Department (SFPD) Inspector really well.
Do you  know what year the movie came out?
It came out in 1971 I think, directed by Don Siegel
Yes I could not remember the year but that sounds about right
. It was followed by four sequels: "Magnum Force" in 1973, "The Enforcer" in 1976, "Sudden Impact" in 1983 (directed by Eastwood himself) and "The Dead Pool" in 1988. In 2012, the film was selected for preservation in the National Film Registry by the Library of Congress for being "culturally, historically, and aesthetically significant".
Plot.
A psychopathic killer, later referred to as "Scorpio", shoots a woman while she swims in a rooftop pool
Dirty Harry
Dirty Harry is a 1971 American action thriller film produced and directed by Don Siegel, the first in the "Dirty Harry" series. Clint Eastwood plays the title role, in his first outing as San Francisco Police Department (SFPD) Inspector "Dirty" Harry Callahan. The film drew upon the real life case of the Zodiac Killer as the Callahan character seeks out a similar vicious psychopath.
"Dirty Harry" was a critical and commercial success and set the style for a whole genre of police films