When John Carpenter's 'Halloween' was released in 1978 it changed the face of the horror genre forever. It achieved phenomenal success, capturing the imagination of a generation and became the most profitable film of its time. The movie gave the producers a guaranteed chart-topping franchise as unstoppable as its central character - the masked killer Michael Myers. But how did the film come to be one of the classic pieces of modern cinema? With only a miniscule budget, a group of unknown actors, terrible reviews and little hope of financial success, the odds were stacked against the movie becoming a box-office smash. Here, Biography goes behind the scenes of 'Halloween' to interview the stars of the film and the crew who turned a low-budget horror film into one of the most famous movies in the horror genre.