Halloween is a 1978 American independent slasher film directed and scored by John Carpenter, co-written with producer Debra Hill, and starring Donald Pleasence and Jamie Lee Curtis (in her film debut), with P. J. Soles and Nancy Loomis in supporting roles. Set mostly in the fictional town of Haddonfield, Illinois, the plot centers on a mental patient, Michael Myers, who was committed to a sanitarium for murdering his teenage sister on Halloween night when he was a child. Fifteen years later, having escaped and returned to his hometown, he stalks teenage babysitter Laurie Strode and her friends while under pursuit by his psychiatrist Dr. Samuel Loomis.

Source: Wikipedia