Beforeigners is a Norwegian science fiction series that takes place in a world where people from the past start appearing in the present. The show follows the lives of two detectives, one from the Viking Age and one from the 19th century, as they investigate crimes involving these 'beforeigners.' With its unique premise, engaging characters, and blend of science fiction and crime drama, Beforeigners has been praised for its originality and its exploration of cultural clashes and identity.