The movie 'Halloween' was inspired by Alfred Hitchcock's 1960 film 'Psycho'. It was also influenced by the works of other horror directors, such as Mario Bava and George A. Romero.
The movie 'Halloween' was inspired by the film 'Black Christmas'. Director John Carpenter was impressed by the way the killer's identity was kept a mystery in the film. Carpenter adapted this concept in 'Halloween' and created the iconic masked killer Michael Myers.