Misinterpretation is another element. People might think they see something supernatural but it's actually something very normal. Such as seeing a man in a vampire costume and thinking he's a real vampire. This often leads to the false sense of horror in the none true horror story.
Sure. There's a story about a vampire. But this vampire wasn't real. A girl thought she saw a vampire in the cemetery at night. It had pale skin and red eyes. However, it was just a man who was wearing a costume for a movie shoot that was happening nearby. He was just waiting for his ride home and the girl misinterpreted the situation completely.
As I don't know the details of this story, it could be special because of its unique take on horror. Maybe it doesn't rely on the usual jump - scares or gore, but rather on a slow - building sense of dread.
Well, if 'the none a true horror story' is a specific story, I haven't heard of it before. It might be a story that plays with the idea of what is truly 'horror'. Maybe it has a plot where the expected horror elements are subverted, like instead of a typical monster, it's something more psychological and unexpected.
One of the most terrifying aspects of 'And Then There Were None' horror stories is the sense of isolation. The characters are trapped on an island with no way to escape, which immediately creates a feeling of doom. As the murders start to occur, the paranoia among the remaining characters intensifies. Each death is mysterious and seems to follow the pattern of the nursery rhyme in the story, adding to the overall sense of dread.