"Reversal" is the fourth episode of the sixth season of Arrow, and the one-hundred-nineteenth episode overall. It aired on November 2, 2017.


Just as Oliver starts to get things in order, Black Siren launches another attack on the citizens of Star City.[1]




Preparation ran from August 2 until August 11, 2017, with a break on August 7 for British Columbia Day. Shooting ran from August 14 until August 24, 2017.[2]


  • According to showrunner Wendy Mericle in the Inside Arrow featurette, the title refers to Oliver and Felicity switching roles where the latter now takes on the role of being a field operative while receiving help from the former.
  • Laurel's disguise features a nod to the Black Canary in the comics. Mainly, the short wig. Prior to dying her dark hair blonde, Dinah Laurel Lance used to wear a blonde wig to hide from her enemies.
  • While he and Felicity were talking about their own love lives, Curtis mentioned UpSwipes.
  • Curtis references the film Planes, Trains and Automobiles when he said that the internet controls "planes, trains and automobiles".


  1. Arrow #6.4 Description: “Reversal” - GreenArrowTV
  2. Marc Guggenheim (@mguggenheim) - Twitter