"A good friend of mine told me that if you're going to try to fight fire with fire, you're gonna get burned, but then another friend of mine came through something pretty scary tonight because he had backup, a team."
—Felicity Smoak

"Fighting Fire With Fire" is the fifteenth episode of the fifth season of Arrow, and the one-hundred-seventh episode overall.


Oliver faces his biggest challenge yet as mayor. Felicity continues down her dark path with Helix. After Vigilante attacks Oliver while he's acting as the mayor, Diggle leads the team in a mission to stop Vigilante once and for all.[1]


Preparation ran from December 12, 2016 until January 5, 2017. Shooting ran from January 6 until January 17, 2017.[2]




  1. Arrow Spoilers: “Fighting Fire With Fire” Description - GreenArrowTV
  2. Marc Guggenheim (@mguggenheim) - Twitter