In horror stories, a great plot twist can be the sudden change in the nature of the threat. For example, a werewolf that the characters have been fighting against suddenly reveals that it can transform into other forms or has a different power that they were unaware of. Another plot twist is when the origin of the horror is completely different from what was expected. Instead of it being a supernatural entity from local folklore, it could be a scientific experiment gone wrong that has created a new type of monster. Also, a plot twist where the characters' own actions are what bring about the worst of the horror. They might think they are doing the right thing to stop the horror, but their actions actually make it stronger or more widespread.
To create effective plot twists for horror stories, start with a solid understanding of the genre's tropes. Then, break those tropes in unexpected ways. For instance, instead of the typical haunted house story where the source of the horror is an old ghost, make it so that the house itself is alive and is the one causing the spooky events. Build suspense gradually and use the plot twist as the climax. Use the setting to your advantage. A desolate forest can seem like a normal spooky place, but then you can reveal that it's actually a portal to another dimension full of horrors. Also, think about the characters' backstories. A character's past might hold the key to a plot twist, like a character who unknowingly has a connection to an ancient evil.
A possible plot twist is that the prince is actually a vampire. He fell in love with Cinderella at the ball because he smelled her sweet blood. When he discovers her true identity, he tries to turn her into a vampire too, but Cinderella has her own dark secrets and resists. Also, the pumpkin carriage could be a death trap, and as soon as midnight strikes, it crushes everyone inside instead of just turning back into a pumpkin.
One kinky twists horror story could be about a woman who got kinky twists done at a very cheap salon. Later, she started feeling a strange itching that wouldn't go away. At night, she thought she heard whispers coming from her hair. As days passed, she noticed her hair seemed to be moving on its own. Eventually, she realized that bugs had been living in the hair used for the kinky twists.
One common plot twist is that the kidnapped author is actually the mastermind behind the horror. They might be using their own 'kidnapping' as a way to create the most terrifying story ever. Another could be that the kidnapper is a deranged fan who wants the author to write a specific ending for a series. Or perhaps the place where the author is held captive is a portal to a more sinister, otherworldly realm, and the kidnapper is trying to force the author to write about it.
One of the best plot twists is in 'The Sixth Sense' where it's revealed that the main character is actually dead. This completely changes the viewer's perspective on all the previous events in the movie.
Yes, there is one story that has been passed around. A girl got kinky twists and soon after, she started having really bad migraines. Every time she touched her hair, it felt like there were electric shocks running through her scalp. She went to the doctor, but they couldn't find anything wrong. As time went on, she started seeing visions of a figure in her peripheral vision, and it seemed to be related to her hair. She finally took the kinky twists out and the symptoms stopped.
One good plot twist could be that the character who seems to be the hero is actually the villain all along. For example, in a detective story, the detective who has been leading the investigation turns out to be the mastermind behind the crimes he's supposed to solve. It completely flips the reader's expectations.
One of the best plot twists is in 'Gone Girl'. The wife fakes her own death and frames her husband, completely turning the typical 'missing wife' love story on its head. It shows that not all love is as it seems and there can be dark, manipulative sides to relationships.
Maybe the two best friends are on a road trip and pick up a hitchhiker. At first, the hitchhiker seems friendly. But then they start acting really strange. The friends soon find out that the hitchhiker is a serial killer who has a special hatred for best friends. He starts to play mind games with them, making them turn against each other. For example, he tells one friend that the other has been saying mean things about them behind their back. This causes a rift in their friendship just as they are trying to survive the killer's threats.