Back to the Past is the forty-sixth episode of the series, sixth episode in Season 2. The episode aired August 24, 2014.


Mina falls into a portal to an alternate timeline, and as the crew search for her, new allies join them on their mission.



  • The future was based on BBC's Primeval's Future.
    • So were some of the creatures.
  • The story was rewritten. The original version was long and would confuse the readers.
  • It was originally a 2 part episode.