On Halloween night of 1963, six-year-old Michael Myers, dressed in a clown costume, stabs his teenage sister Judith to death with a kitchen knife.
The film was the first installment in what has become the Halloween franchise.
The plot is set in the fictional Midwestern town of Haddonfield, Illinois.
On Halloween night in 1963, a six-year-old Michael Myers dressed in a clown costume murders his teenage sister by stabbing her with a kitchen knife.
Fifteen years later, Michael Myers, age 21, escapes from a psychiatric hospital, returns home, and stalks Laurie Strode and her friends. Sam Loomis suspects Michael's intentions, and follows him to Haddonfield to try to prevent him from killing.
Many critics credit the film as the first in a long line of slasher films inspired by Alfred Hitchcock's Psycho (1960).
Halloween had many imitators and originated several clichés found in low-budget horror films of the 1980s and 1990s.
Unlike many of its imitators, Halloween contains little graphic violence and gore.
It was one of the first horror films to introduce the concept of the killer dying and coming back to life again within the same film.
In 2006, it was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".s techniques and plot elements, although not founded in this film, have nonetheless become standard slasher movie tropes.