The Terror series is not based on an actual true story. It weaves a fictional tale around themes and concepts that might draw inspiration from history, but it's not a factual account.
The 'Series The Terror' is based on the real - life Franklin Expedition. It was a doomed British voyage in the 19th century. The expedition ships, HMS Erebus and HMS Terror, set out to find the Northwest Passage. But they got stuck in the Arctic ice. The crew faced extreme cold, starvation, and some mysterious and terrifying events, which the series dramatizes.
It's a combination. 'The Terror' incorporates elements of true stories but also adds fictional elements to make the narrative more engaging and complex.
It depends. Some elements of terror stories might be inspired by real events, but often they are fictional creations with a blend of imagination and common fears.