Felicity's alliance with Helix threatens to ruin her relationship with Team Arrow and Lyla.
- Accidental Murder: Alena didn't want to kill the ARGUS agent, but she isn't all too troubled by it either.
- All Your Base Are Belong to Us: In the finest Arrow tradition, the Big Bad attacks the Arrow Cave.
- Ambiguous Situation: The Helix-provided program tracks Prometheus to the very building that stands above the Arrow Cave just before the terminal it's been plugged into explodes. Whether Helix intended this or it's just a coincidence is unclear.
- Canon Foreigner: There is no one in The DCU or any other DC adaptation with the name "Cayden James".
- The Chains of Commanding: Lyla admits that it's hard to be an idealist when being The Spymaster. John doesn't approve.
- Cliffhanger: Felicity uses the tracker to find Prometheus and it finds him in the Arrow Cave... and then a bomb goes off.
- Embarrassing Nickname: Rene keeps calling Quentin Hoss. He also convinces his daughter to do the same, much to Quentin's subdued annoyance.
- The Faceless: Cayden James' face is not revealed.
- Hypocrite: Felicity is more than willingly to bring to light the fact that her teammates all have made their fair share of morally questionable decisions, so they are in really no position to call her out on hers.
- Likewise, John calls out his wife for holding a man captive with no due process, despite the fact that a little over a year ago he did the very same thing to his own brother (though in his defense Andy was declared legally dead).
- Grey-and-Gray Morality: Team Arrow, Helix, and ARGUS are all treated as various shades of grey, each doing morally questionable things in pursuit of morally questionable goals. The addition of Prometheus into the mix might make this Black-and-Gray Morality, but he doesn't really appear in the episode, despite driving most of the conflict.
- I Did What I Had to Do: Both Felicity (and by extension Helix) and Lyla try to justifiy their actions like this.
- Idiot Ball: Lyla grabs it hard by not telling Team Arrow about where Cayden James is really held.
- Ignored Epiphany: Despite being pretty concerned about their actions, Felicity still sides with Helix for the (supposed) greater good.
- I Need a Freaking Drink: Oliver, after Felicity sides with Helix over Team Arrow.
- I Shall Taunt You: Prometheus' play in the arcade was just to mess with Team Arrow.
- Jumping Off the Slippery Slope:
- Felicity is willing to brush off the fact that Helix murdered a man to find Chase.
- Lyla is becoming more and more like Amanda Waller, much to John's distress.
- Karma Houdini: Felicity aids Helix in breaking James out including having to go against her teammates. And after she gets what she wants she waltzes back into the Arrow Cave like nothing happened.
- Kirk Summation: John points out that while ARGUS trampling over basic civil rights may make the world safe, it doesn't make it better.
- Laughably Evil: Prometheus tampering with an Arcade machine to troll the heroes after killing several ARGUS agents is horribly tasteless, but also hilarious.
- Morality Pet: The main reason Oliver is concerned about Felicity going down the bad road is because she was always the one who tried to stop him from doing things like that.
- No Good Deed Goes Unpunished: The press naturally grills Oliver on how his administration was completely blindsided by Adrian Chase being Prometheus. Oliver can only offer cliches in response.
- "Not So Different" Remark: John accuses Lyla of becoming more and more like Amanda Waller.
- Parental Neglect: When pressed why he has made no effort to see his daughter, Rene tells Quentin that he was making his daughter some soup before he passed out drunk. Zoe tried to get it herself and then badly burned her hands, and her cries of pain made him wake up. This convinced him that she was better off without him.
- Present Absence: The hunt for Prometheus drives the plot of this episode, but aside from a picture on an arcade game screen, he doesn't appear, although he makes his presence known in the final scene.
- Pun: Curtis responding to Oliver like this:Roger Roger, we have clearance Clarence, what is our vector, Victor?
- Put on a Bus: Helix note packs up and leaves their old base once they get their leader back in order to evade Felicity, believing her connections to Team Arrow make her too much of a liability.
- Pyrrhic Victory: Felicity gets what she wants — a biotracker to find Prometheus. But she is kicked out of Helix even though she was useful since they believe her relationship with Team Arrow is a liability, her relationship with Team Arrow is strained for going against them, and either Adrian Chase comes right to them anyway or the biotracker destroyed their computer.
- Recycled Plot: This isn't the first time Lyla and John have had words about her work with ARGUS. They admit it themselves.
- Refuge in Audacity: Prometheus taunts those on his trail by literally programming himself into one of the arcade games before leaving.
- Screw This, I'm Outta Here: After Curtis uses his T-Spheres to disarm a couple of Helix members, he asks if they want to see what else they can do. The hackers wisely run away.
- Shout-Out: The above-mentioned Pun from Curtis is a direct quote from Airplane!.
- Shut Up, Kirk!: Lyla tells John that the world isn't getting better, it's getting worse, and she'll do whatever it takes to fix it. John still doesn't agree.
- Troll: Prometheus messes with his pursuers by programming a picture of himself into an arcade game screen with the words "GAME OVER" flashing over it.
- We ARE Struggling Together: Felicity aligns herself with Helix against her team to get out Cayden James, though she still wants the same they do.
- Well-Intentioned Extremist:
- Felicity is diving into this territory as she starts crossing moral lines for the sake of taking down Prometheus, working with Helix after they've killed an ARGUS agent (albeit accidentally) and helping them break a potentially dangerous prisoner out of ARGUS custody.
- Lyla qualifies, as she unlawfully locked up the aforementioned prisoner without due process, with the justification that he is a very dangerous individual.
- What the Hell, Hero?:
- Quentin calls Rene out on making zero attempts to see his daughter.
- Oliver, Diggle, and Lyla give it to Felicity for allying with Helix, especially after Alena murdered an ARGUS agent.
- Diggle subtly calls out Lyla for holding Cayden James in indefinite custody without trial in blatant violation of basic USA civil rights and holding him in an illegal back site. Lyla is unrepentant.
- Xanatos Speed Chess: It seems that Adrian isn't having much difficulty adapting to the unforeseen circumstance of being publicly outed as Prometheus, as he's still able to deal immense damage despite being public enemy #1.
