The exploits a team of people whose job is to investigate the unusual, the strange and the extraterrestrial.
- Genre: Sci-Fi & Fantasy, Action & Adventure, Drama
- Studio: BBC One, BBC Three
- Keyword: supernatural, time travel, alien, paranormal investigation, spin off
- Cast: John Barrowman, Eve Myles, Alexa Havins, Mekhi Phifer, Bill Pullman, Kai Owen