High Quality Content by WIKIPEDIA articles! Safehold is a science fiction book series by David Weber, which as of 2012 consists of six titles. The series is mostly set around the 31st century, on a distant world dubbed "Safehold" where a group of humans has hidden themselves from an alien race known as the Gbaba. When first contact was made between the humans and the Gbaba, the aliens began an extermination campaign which nearly succeeded in destroying all known humans in the galaxy, including the entire population of Earth. The humans on Safehold managed to avoid detection by reverting to a pre-electrical and pre-industrial technology base and incorporating that into a religious belief system which discouraged scientific curiosity and forbade any higher technology on penalty of death.