Start by laying the groundwork of a seemingly normal story. Build up characters and a plot that leads readers in one direction. Then, in the final moments, introduce an unexpected twist or reveal something that completely changes the perspective.
Well, first, think of a common story theme or setup. But as you progress, introduce elements that are hidden or hinted at subtly. For the ending, come up with a shocker that defies expectations but still makes sense within the story's framework.
In a small town, a detective named Sarah was looking into the disappearance of a young girl. All the evidence pointed to a local loner who lived on the outskirts of town. Sarah went to his house to question him. There were strange noises coming from the basement. When she opened the basement door, she expected to find the girl. Instead, she found a group of puppies that the loner had been hiding from an animal control officer who wanted to euthanize them. The real kidnapper was the girl's stepmother who wanted to get rid of her for the inheritance.
You can do it by introducing a sudden twist that the readers don't expect. Maybe have a character reveal a hidden secret or a seemingly minor detail turn out to be crucial.
First, create normal and believable characters and situations at the beginning. For example, in a story about a school, start with normal school days. Then, gradually build up some small mysteries or tensions, like a strange noise in the school at night. Finally, for the ending, completely subvert the reader's expectation. Maybe the strange noise was made by a time - traveling device hidden by a student.
A bank was robbed in broad daylight. The robbers were masked and heavily armed. They quickly took the money and fled the scene. The police chased after them but lost track. Days passed, and the police had no leads. Then, suddenly, they received an anonymous tip about a hideout in the woods. When they raided it, they found the money but no robbers. As they were about to leave, they noticed a strange mark on the wall. It led them to the real culprit - the bank manager. He had faked the robbery to get the insurance money.
Once upon a time, it was Lily's birthday. Her friends planned a huge surprise for her. They decorated her living room with balloons and streamers while she was out. When she came home, they all jumped out and shouted 'Surprise!'. There was a big cake with her name on it. Lily was overjoyed and had a wonderful time with her friends.
You can end a short story by creating a sense of closure. This might involve showing the main character achieving their goal. If the character was striving to win a competition, the ending could be them standing on the podium, receiving the trophy. Or, you could end it on an emotional note. Maybe the character has lost someone they love during the story, and the ending shows them coming to terms with their grief, perhaps by visiting the person's favorite place and feeling a sense of peace.
A surprise ending works when it's unexpected but still makes sense in the context of the story. You can create one by laying false clues or hiding important details until the end.
Let's say there's a story of a woman waiting for a bus. A stranger gives her a flower and when she gets home, she discovers a hidden message inside the flower that changes her life completely. That's a short story with a surprise ending.
An ending that ties up all the loose ends is also great. If there are various sub - plots in the short story, make sure they are all resolved in the end. For instance, if a character was searching for a lost item and also dealing with a relationship problem, by the end, both the item should be found and the relationship issue should be settled, either positively or negatively.
One way is to tie up all the loose ends neatly. For example, if your short story has a mystery, reveal the solution clearly at the end. This gives the reader a sense of closure.