"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]


  • 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. Ray Palmer used to work for the dating app in the DC's Legends of Tomorrow episode "Aruba-Con".
  • 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