"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 short brunette wig that she uses as a disguise features a nod to the Black Canary in the comics; prior to dying her dark hair blonde, Dinah Laurel Lance used to wear a long blonde wig to hide from her enemies.
  • Oliver and Felicity mention their first date three years ago, referencing the events of "The Calm".
  • When commenting about Black Siren's style of murder and seduction of victims, Curtis states that "Black Siren turned Black Widow". This is a reference to Black Widow, a superheroine from Marvel Comics who is spy and operative of S.H.I.E.L.D..
  • While he and Felicity were talking about their own love lives, Curtis mentioned Upswipz.
  • 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