"Dangerous Liaisons" is the nineteenth episode of the fifth season of Arrow, and the one-hundred-eleventh episode overall. It aired on April 26, 2017.


Oliver, Team Arrow, A.R.G.U.S and the SCPD kick off a citywide manhunt for Adrian Chase. Helix tells Felicity they have a way to find Chase but they will need something big, and illegal, from her in return.[1]




Preparation ran from February 10 until February 21, 2017, with a break on February 13 for Family Day. Shooting ran from February 22 until March 3, 2017.[2]


  • The name of this episode comes from the translated title to the French novel Les Liaisons Dangereuses.
  • Lyla claims that Cayden James is worse than Snowden.
  • Felicity learns that she was used by Helix to get their boss out and is kicked out of Helix.
  • This is the only episode of Arrow to not reference a bow and arrow at all.


  1. Arrow Spoilers: "Dangerous Liaisons" Description - GreenArrowTV
  2. Marc Guggenheim (@mguggenheim) - Twitter