"Not gonna pretend there's not a difference between the three of us and the three of them. You know, the original three."
"But--spying on us? I mean, come on.
Dinah and Curtis regarding Oliver, John and Felicity spying on them and Rene.
"Irreconcilable Differences" is the ninth and midseason finale episode of the sixth season of Arrow, and the one-hundred-twenty-fourth episode overall. It aired on December 7, 2017.


Quentin Lance is kidnapped by Black Siren and Cayden James, who are looking to trade Lance’s life for a weapon of mass destruction. Oliver and Team Green Arrow must figure out a way to save Lance while still keeping the city safe.[1]




Preparation ran from October 5 until October 16, 2017, with a break on October 9 for Thanksgiving. Shooting ran from October 17 until October 26, 2017.[2]


  • Thea references both Roy Harper and Chase in her dance with Rene Ramirez.
  • Charlotte Ross, Kirk Acevedo and Michael Emerson previously appeared in the Law & Order franchise.
  • Kirk Acevedo, Charlotte Ross and Tom Amandes all appeared on NYPD Blue. Acevedo and Amandes also appeared on Numb3rs.
  • Stephen Amell, Kirk Acevedo, Charlotte Ross and Johann Urb previously appeared in the CSI franchise.
  • Michael Emerson and Tom Amandes both appeared on The Practice and Parenthood.


  1. Arrow Spoilers: “Irreconcilable Differences” Description - GreenArrowTV
  2. Marc Guggenheim (@mguggenheim) - Twitter