- For other uses of Dangerous Liaisons, see Dangerous Liaisons (disambiguation).
- "For the past four years, I have watched you do whatever you had to, whatever it took to stop the people threatening this city. How can you stand there and not ask me to do the same thing?"
- —Felicity Smoak to Oliver Queen on her mission for Helix
"Dangerous Liaisons" is the nineteenth episode of the fifth season of , and the one-hundred-eleventh episode overall. It aired on April 26, 2017.
|Oliver, Team Arrow, A.R.G.U.S and the SCPD kick off a citywide manhunt for Adrian Chase. Helix tells Felicity they have a way to find Chase but they will need something big, and illegal, from her in return.|
With law implementation organizations incapable to find Chase, Felicity consents to Alena's arrangement to free previous Helix pioneer Cayden James, who made a biometric tracker that can discover anybody, however is as of now in A.R.G.U.S. authority without fair treatment. Lyla plans to utilize James as lure to crush Helix, however Alena, having just foreseen that, discovers James' actual area and leads her group, including Felicity, to the salvage. They are hindered by the group, yet Felicity constrains them to permit Helix to escape with James. Helix closes their association with Felicity, however furnishes her with James' scanner, which she uses to discover that Chase is as of now in the group's den, beginning an ambush. In the interim, Quentin stands up to Rene for not visiting Zoe, however legitimately conceivable. Rene trusts himself to be an inadmissible dad. Be that as it may, Quentin sorts out a visit, making Rene choose to battle to recover guardianship of Zoe. John goes up against Lyla for her ethical equivocalness which prompted their separation beforehand.
- Stephen Amell as Mayor Oliver Queen
- David Ramsey as John Diggle/Spartan
- Willa Holland (credit only)
- Emily Bett Rickards as Felicity Smoak
- Echo Kellum as Curtis Holt/Mister Terrific
- Josh Segarra (credit only)
- Paul Blackthorne as Deputy Mayor Quentin Lance
- Audrey Marie Anderson as Director Lyla Michaels
- Rick Gonzalez as Rene Ramirez/Wild Dog
- Juliana Harkavy as Officer Dinah Drake
- Kacey Rohl as Alena Whitlock
- Alistair Abell as Charles Eked
- Eliza Faria as Zoe Ramirez
- Marrett Green as Merritt Davis
- Jarrett John as Agent Pierce
- Sarah Kelley as Ms. Nave
- Dustin Lloyd as Lead Merc
- Elinet Louicius as Gate Guard
- Laura K. MacDonald as UNI
- Edwin Perez as Amir
- Greg Rogers as Councilman Kullens
- Nisreen Slim as Reporter #1
- Tevis Toro as FBI Agent
Preparation ran from February 10 until February 21, 2017, with a break on February 13 for Family Day. Shooting ran from February 22 until March 3, 2017.
- The name of this episode comes from the translated title to the French novel first published in 1782, Les Liaisons Dangereuses.
- When Team Arrow and the police enter the arcade of video game automats, one of them is a light gun shooter game called Maximum Force from 1997.
- This is the only episode of to not reference a bow and arrow at all.
- This is also one of the few episodes to not feature a flashback storyline in any form.
- This episode introduces Cayden James (albeit unseen), who will play a major role in the sixth season as a main villain.
- John tells Lyla that Felicity has "gone over to the dark side". This is a reference to Star Wars.
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