10 Horror Movie Retcons Everyone HATED

10. Laurie Is Michael's Sister - Halloween II

It's no secret that everyone loathes Halloween: Resurrection's infamous retconning of Michael Myers' death, but the franchise's original sin retcon happened over 20 years earlier in Halloween II.

The sequel sees Michael (Dick Warlock) once again pursuing Laurie Strode (Jamie Lee Curtis) following her survival in the first film, but in an attempt to raise the stakes and give their conflict a more personal flavour, Michael's reason for pursuing Laurie is retconned.

Halloween II's big twist is that Laurie is Michael's younger sister, who was adopted by the Strodes after the death of her and Michael's parents.

It remains a hugely controversial retcon to this very day, because while the original Halloween implied that The Shape was a relentless force-of-nature driven purely by his need to kill, Halloween II gave him a more specific, even relatable motive, which in turn stripped away much of his terrifying ambiguity.

The sibling twist led to a glut of sequels centered around Michael hunting down Laurie and her bloodline, though this was itself retconned in 2018's Halloween film, which disregarded every prior sequel and stated that the sibling revelation was simply a rumour somebody made up.