10 Horror Movie Trailers That Gave Away The Entire Plot

In Luke Scott's film debut, a group of scientists create an artificial human called Morgan from scratch. When her intelligence and abilities grows exponentially, the team worry they won't be able to stop her if she decides to turn against them.

The first trailer is a perfect example of how to sell a horror film. The premise is clear, the titular character comes across as intriguing without giving too much away. There is mention of Morgan causing a dangerous "incident" but we aren't told or shown the exact details. Most importantly, the trailer makes Morgan sound like a terrifying force to be reckoned without showing what she looks like.

Unfortunately, the second trailer shows everything the story has to offer, discarding all intrigue and subtlety. We see Morgan's face, causing the character to lose her mystique. The incident which was hinted at in the initial promo was revealed in the second trailer clear as day. Not only does it show Morgan attacking and killing people, it reveals that the character has psychic powers. If you've seen this preview, you can probably figure out everything that's going to happen in the movie beat-for-beat.