"Safehold" is a science fiction series written by David Weber. It is set in a distant future where humanity has established a colony on a planet called Safehold. To protect the human race from a powerful alien threat, the leaders of Earth created a society that is technologically regressed, preventing advancements that could lead to discovery by the aliens. The story follows the character Merlin, an artificial intelligence designed to guide and protect the inhabitants of Safehold. As the plot unfolds, themes of religion, governance, and the struggle for freedom emerge, highlighting the complexities of a society built on secrecy and control.