You could have a plot twist where the object of a character's search is not what they expected at all. Say a treasure hunter is looking for a chest full of gold. When they finally find it, it turns out to be a chest full of old letters that reveal a family secret far more valuable than gold. This changes the meaning of the 'treasure' in the story.
A time - related plot twist can be interesting. For example, a character believes they have been living in the present day but then discovers they are actually in a post - apocalyptic future where time has been distorted. This forces them to re - evaluate everything they thought they knew.
One idea could be that the character who seems to be the hero is actually the villain all along. For example, in a story about a detective solving a crime, it turns out that the detective was the one who set up the crime in the first place to gain fame.
A woman moves into a new apartment. Strange things start to happen like objects moving on their own. She believes it's a ghost. But it turns out that her ex - boyfriend has installed hidden cameras and is remotely moving things to make her think she's haunted. He's obsessed with her and wants to drive her crazy. This adds a more human - made horror element rather than the supernatural at first glance.
One idea could be that the seemingly innocent child character is actually the one causing all the horror. They have some sort of dark power that they are using to torment the adults around them. For example, they make people see their worst nightmares come to life.
Surprise is key. For example, in 'The Lottery' by Shirley Jackson. At first, it seems like a normal small - town lottery. But then it turns out the 'winner' is actually going to be stoned to death. The sudden shift from a seemingly positive event to a horrific one is what makes it a great plot twist.
One idea could be to introduce a new character who has the power to manipulate time loops. This character could accidentally create a series of chaotic time twists that the main characters from the original 'a twist in time' have to figure out how to fix. Another plot idea is to explore a different version of a key event in the 'a twist in time' story. For example, what if the main character made a different choice at a crucial moment? It could lead to a completely different outcome and a whole new set of adventures.
One interesting one is about a couple camping in the woods. They hear howls all night. In the morning, they find a huge paw print. They decide to leave but get lost. As night falls again, they see a pair of glowing eyes. Just as they think it's a wild animal, a ranger comes out. But then the ranger's face twists and he says 'I'm the real danger here'.
One of the best is 'The Sixth Sense'. The plot twist where we find out that Bruce Willis' character is actually dead all along is mind - blowing. It completely changes the way you view the entire movie.
You could write about a man who inherits an antique mirror from his deceased grandmother. When he hangs it in his bedroom, he notices that there are strange reflections in it at night. The reflection shows a different version of his room, with dark, shadowy figures moving around. As he stares into the mirror more often, he starts to feel a presence trying to reach out from the other side, and he realizes that the mirror might be a portal to a haunted dimension.
One is 'The Lottery' by Shirley Jackson. At first, it seems like a normal small - town lottery event. But the plot twist is that the 'winner' of the lottery is actually stoned to death as a sacrifice. It's a very dark and unexpected turn.
Another is 'An Occurrence at Owl Creek Bridge' by Ambrose Bierce. A man is about to be hanged on a bridge during the Civil War. As he falls, he seems to escape and makes a long journey homeward. But in the end, it turns out that all of his escape was just a hallucination in the split second before his death. It's a really mind - boggling plot twist.