*The plot of Halloween and its sequels involves Michael Myers, a masked killer who stalks his victims in the fictional town of Haddonfield, Illinois:

Halloween (1978) On Halloween night in 1963, six-year-old Michael Myers murders his teenage sister, Judith. Fifteen years later, he escapes from Smith's Grove Sanitarium and returns to Haddonfield, where he stalks babysitter Laurie Strode and kills three of her friends before attacking her.

Halloween (2007) After escaping from Smith's Grove, Michael returns to Haddonfield to find his baby sister, Laurie.*