For the island of the same name, see Lian Yu (island).
"I knew it would come to this. Your son is dead, Oliver."
"I don't believe you because you're a liar. You're lying to me to manipulate me into doing what you want, but, Adrian, here's the thing. If you are telling the truth... if you killed my son, I am never going to be the person you want me to be. Not ever.
Adrian Chase and Oliver Queen
"Lian Yu" is the twenty-third and final episode of the fifth season of Arrow, and the one-hundred-fifteenth episode overall. It aired on May 24, 2017.


The battle between Oliver and Adrian Chase culminates in a final epic battle on Lian Yu. After recent events, Oliver decides to recruit a group of unlikely allies — Slade, Nyssa, Merlyn and Digger Harkness — to defeat Chase. However, Chase has his own armyBlack Siren, Evelyn Sharp and Talia al Ghul — and the forces collide in an explosive season finale.[1]




Preparation ran from March 29 until April 6, 2017. Shooting began on April 7 and ran until April 19, 2017, with a break on April 14 for Good Friday.[2]


  • This is the final episode of Arrow to feature flashbacks regarding the 5 years Oliver was away from Starling City (later known as Star City) which ended with the scene which is the beginning of the pilot episode; however, this is not the final episode of the series.
  • The first line of the episode was "The name of the island they found me on is Lian Yu. It's Mandarin, for Purgatory", spoken by Oliver. This is the very first line that was ever said on the show, in "Pilot".
  • The flashback when Oliver runs to alert passing fishermen, as well as being rescued by them, was first shown in "Pilot". This marks the only time a clip has appeared in both the flashback storyline and the present storyline.
  • Stephen Amell revealed on May 21 that another yet unannounced surprise cameo appearance would happen during this episode,[3] which was later revealed to be Susanna Thompson as Moira Queen.
  • This episode marks a Spartacus reunion for Katrina Law, Manu Bennett and Nick E. Tarabay.
    • Stephen Amell auditioned for the title role following the departure of its original actor Andrew Whitfield who died a year after be diagnosed with non-Hodgkin lymphoma once again. The role instead went to then-future Arrowverse actor Liam McIntyre.
  • The first fight between Oliver and Adrian, along with the flashback of Oliver and Kovar, slightly mirrors the season 2 finale, Unthinkable. There, Oliver and Slade Wilson were fighting in the present and in the flashback. It also happened after that when Oliver ran through the forest past and present.
  • This is the final episode to credit Katie Cassidy as a special guest star. From season 6 onwards, she is credited as a series regular again.
  • This episode takes place entirely on Lian Yu. (However, Starling City briefly appears in the final flashback.)
  • The scene where Adrian Chase dies is very similar to when Robert Queen dies in which they both put their gun to their heads and shot themselves in front of Oliver, on a boat, within sight of Lian Yu.
  • Three out of the five major Arrow season antagonists appear - Malcolm Merlyn, Slade Wilson, and Adrian Chase, athough only the latter appears in an antagonistic role; Malcolm and Slade are both seen acting as supporting protagonists.
  • Nick E. Tarabay and Anna Hopkins both have recurring roles on The Expanse.


  1. Arrow Season 5 Finale Description: “Lian Yu” - GreenArrowTV
  2. Marc Guggenheim (@mguggenheim) - Twitter
  3. The Arrow Season 5 Finale Has A Surprise Cameo - GreenArrowTV