Halloween is a 1978 independent horror/slasher film directed by John Carpenter. It follows the point of view of Michael Myers, a serial killer who murders his sister as a child and escapes from an institution 15 years later to return to his hometown to find new victims. The opening sequence uses ominous music and a flickering jack-o-lantern to build tension. It also employs point-of-view shots from the killer's perspective to unsettle the audience. The film breaks conventions by revealing the killer is a child, which adds mystery and frightens viewers by subverting expectations of children as innocent. Halloween helped establish the slasher film genre through innovative techniques that both followed and challenged typical horror film tropes.