For the Arrow episode, see "Left Behind".
"What happened to Sara?"
"It's called time drift. The same thing you and Mr. Palmer experienced, albeit on a much lesser scale. If one stays for too long in a foreign time, they begin forgetting their past and who they really are.
Rip explains to Kendra how Sara has forgotten her past.
"Left Behind" is the ninth episode of the first season of DC's Legends of Tomorrow, and the ninth episode overall. It aired on March 31, 2016.


Ray, Sara and Kendra are shocked after they watch the Waverider fly off without them, leaving them stranded in the '50s. After waiting 2 years for their teammates to come back, the three realize they must move on with their lives. Ray and Kendra bond as a couple but Sara decides to return to the League of Assassins and Ra's al Ghul.[src]




  • This episode shares the same name of Arrow's "Left Behind". This name can be explained by the presence of Arrow Season 3's main antagonist, Ra's al Ghul, or by the fact that Sara Lance, Kendra Saunders, and Ray Palmer were left behind by the Waverider.
  • One of Ray's students is William Gates Sr., the father of Microsoft co-founder Bill Gates.
  • Sara's time in the League appears to be a bootstrap paradox.
  • Ray questioned why Rip didn't attempt to go back to when the Waverider was hijacked, so to spare him, Sara, and Kendra two years in the past; Rip offered a cop-out excuse.
  • When discussing about being stranded in Harmony Falls for two years, Ray mentions how he and Kendra watched on TV The Ed Sullivan Show, a variety show which was broadcast from 1948-71.
  • According to Rip, staying in a foreign time for too long causes a time traveler's memory to start warping. This would be further explained in "The Magnificent Eight".
  • The med bay of the Waverider can recreate missing limbs; Snart froze and smashed his hand to get free of some handcuffs, and Gideon later recreates his hand for him.
  • This episode marks the first appearance of Ra's al Ghul's daughter, Talia, who would go on two have a major role in Season 5 of Arrow. Talia al Ghul is famously known in the comics as the youngest daughter of Ra's al Ghul, as well as the wife of Batman and mother of their son, Damian Wayne
  • The Shadow Record mentions a member of the League called Fadir Nasser, who in the comics is known as the White Ghost.
    • In the comics, the White Ghost's real name is Dusan al Ghul, the only son of Ra's al Ghul.
      • The Shadow Record also mentions other 4 villains from the comics: Malaq, a member of the League who has a single appearance in Detective Comics Vol. 1, issue #750 from November 2000.
      • Tigris, a female member of the League who is a minor villainess and ally to Batgirl (Cassandra Cain).
      • Tzin-Tzin, a criminal mastermind who is hired by League and enemy to Batman/
      • Onyx Adams, a former member of the League and ally of Batman and Green Arrow who is a vigilante in Gotham City and a member of the superhero group Outsiders, and later the leader of Fist Clan.


  • Rip challenging Ra's to a trial by combat creates a continuity error; In the Arrow Season 3 episode "The Climb", which takes place in 2014, Ra's mentioned the last time someone challenged him to a trial by combat was 67 years prior, meaning that he was challenged in 1947. However, in this episode, it was shown that Ra's was challenged in 1960.
    • It is possible that Ra's doesn't count 1960 because he wasn't the one who fought Rip's champion.


Preparation ran from December 7 until December 15, 2015. The first part of shooting ran from December 16 until December 19, 2015. The second part of shooting ran from January 3 until January 12, 2016.[1]


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