Ray (Brandon Routh), Kendra (Ciara Renee) and Sara (Caity Lotz) were left stranded in 1958 after Chronos forced the Waverider to quickly leave.
Prior to that moment the trio investigated a series of murders seemingly tied to Vandal Savage (Casper Crump). Sara infiltrated a mental institution where Savage was working as a doctor under another name. Meanwhile Kendra and Ray pretended to be a married couple but Savage recognised Kendra and almost killed her.
Elsewhere Jefferson (Franz Drameh) was attacked by humanoid bird-like creatures created by Savage and Dr. Stein (Victor Garber) created a cure to help him and other victims.
The next episode of the season is Left Behind. Ray, Sara and Kendra make surprising life choices when they are abandoned by their team in the 1950s.
Tune in to Sky 1 HD at 8pm on Thursday to see the episode. Preview it with our gallery below: