Oliver and Felicity's wedding bliss is interrupted by revelations of a possible traitor in Team Arrow working for Agent Watson, and Black Siren kidnapping Quentin.
- At Least I Admit It: Vincent Sobel tries to defend himself against Dinah's accusations by saying that he is at least honest with himself and others in what he is doing, unlike Oliver but then.... well read below.
- Brutal Honesty: Curtis gets quite blunt under the effects of alcohol.
- The Bus Came Back:
- Oliver and Felicity's friends from Ivy Town come back for the reception.
- Donna Smoak and Noah Cutter return, neither have been seen since Season 4.
- Call-Back:
- Thea mentions to Rene that she had a bad experience with a DJ, referring to Chase back in Season 3.
- Oliver justifies his extreme measures by citing Evelyn Sharpe's betrayal from Season 5.
- The Chessmaster: If he wasn't one before, this episode cements Cayden James' status as one when it's revealed that all the supposedly independent villains throughout the season are actually working with him, indicating that he's been behind the events of the entire season.
- Conflicting Loyalty: Rene is torn between his loyalties to the team and the love for his daughter.
- Continuity Lockout: Oliver and Felicity were married by Diggle on what was technically an episode of Legends of Tomorrow.
- Cool Aunt: Thea has no problem allowing William to have a "sip" of Champagne but only during the toast; apparently Moira and Robert did the same while raising Oliver and Thea.
- Crazy-Prepared: Oliver has a remote control for his bow, which proves useful when being surrounded by James's goons with his bow lying on the ground.
- Divide and Conquer: It seems like this was Cayden James's plan all along, as evidence by him and his associates watching Team Arrow fall apart during the final scene.
- Double Standard: Abuse, Female on Male: Felicity slaps Curtis hard enough to get a reaction, and the worst she gets is Curtis muttering in disbelief that she hit him while she's talking to Oliver.
- Drowning My Sorrows: Curtis remembers his own wedding during Oliver's and Felicity's festivities and tries to drown it in booze. He even attempts to make an awkward speech to the crowd.
- Easily Forgiven: As a parent, Oliver is able to sympathize with Rene's motives for becoming a state witness and forgives him .... until he makes a hotheaded move out to find Quentin, thus nearly compromising the team as backup.
- From Bad to Worse: A bombshell is dropped when it's revealed that one member of Team Arrow turned traitor, then Black Siren kidnaps Quentin.
- Hypocrite: Oliver made a big speech that teams needed trust, and felt that Rene wasn't trustworthy anymore for breaking ranks. However, he didn't seem to grasp that trust was a two-way street, as when he spied on his teammates. The irony is not lost on Dinah, who quits immediately after Rene is kicked out.
- Jerkass Ball: Oliver grabs it big time when he decides to spy on the newbies to find out who turned traitor, rather than ask them to their face, like Diggle suggests. The result is that Dinah and Curtis feel betrayed and leave, and Rene is kicked out.
- Karma Houdini: Despite being a fugitive cyber-terrorist, The Calculator still shows up in public at his daughter's wedding, and no one points out the potential problems with this.
- Know When to Fold 'Em: How Rene justifies giving into Agent Watson's threat of blackmail.
- Logical Fallacies: Dinah thinks that her and Vincent meeting in private is no one else's business... despite the fact that Vince is a wanted criminal and has been a threat to Team Arrow more than once. Now that's Lethally Stupid.
- Moral Luck: When Wild Dog says he left the position to find Quentin he defends himself claiming that he did in fact find him. Oliver points out that he got lucky and he still disobeyed orders, which could very well end badly.
- Never My Fault: Oliver seems to ignore the fact that Dinah and Curtis left the team was because they felt he didn't trust them, which is also the reason that Rene disobeyed orders, resulting in getting kicked off the team.
- Nice Job Breaking It, Hero: Oliver spying on Dinah, Curtis, and Rene severely strains their trust in him — it causes Rene to make the decision to disobey orders and look for Quentin, resulting in him getting kicked out, while Dinah and Curtis leave Team Arrow because of it. This also drives Dinah straight back towards Vince/Vigilante, who is secretly working with Cayden James.
- Not Helping Your Case:
- Curtis insisted that he's able to walk straight even though he's drunk as a skunk, then proceeds to fall on the floor and then make a flimsy excuse that he's clumsy.
- Felicity twice (on different occasions) denies spying on the team, first she responds she was simply keeping tabs. The second time, when Curtis accuses her of bugging him, she states she was merely tracking his GPS.
- Nothing Is the Same Anymore: Oliver's paranoia leads to all the new recruits from Season 5 leaving.
- Parental Substitute: Quentin cements his status as one for Oliver by giving him a family heirloom. Even he says it's wrong that Oliver doesn't have a parent at the reception.
- Pet the Dog: Black Siren does not kill Quentin like she was ordered. There might be hope for her redemption yet.
- Plot-Mandated Friendship Failure: Dinah, Curtis, and Rene are obviously furious that Oliver automatically assumed that one of them was the traitor and spied on them because they weren't the part of the "original" team. Dinah and Curtis leave the team because of it.
- Pyrrhic Victory: Team Arrow manages to save Quentin and keep Cayden James from getting the device he was after, however, Team Arrow loses half of its members afterwards.
- Red Herring: Initially, Oliver thinks Dinah is the spy, due to getting in contact with Vincent Sobel.
- The Reveal:
- Earth-2 Quentin died on Black Siren's 13th birthday; he was killed by a drunk driver while picking up her cake. It was just the first of many tragedies.
- When Black Siren attacked the bunker, she planted a microcam allowing James to spy on Team Arrow and plant the seeds of discord amongst themselves.
- All of the seemingly independent villains who've appeared this season are actually led by Cayden James to take down Team Arrow.
- Dinah casually lets it slip to Renee and Curtis that she's been engaged to be married multiple times.
- She Cleans Up Nicely: Felicity gets a nice close-up in her wedding attire.
- Stating the Simple Solution: Diggle points out they could just be open with the New Recruits about the new court witness development and give them a chance to come clean before jumping to the extreme method of putting them all under surveillance.
- The Stoic: Oliver is disturbingly unmoved by Curtis and Dinah leaving the team because he spied on them.
- Tempting Fate: Just when Felicity mentions how perfect the evening is, Quentin tells Oliver about the witness who is ready to testify against him.
- This Is Unforgivable!:
- Oliver was willing to give Rene a second chance after finding out he was the traitor. However, when Rene broke rank to look for Quentin, Oliver saw it as blowing it and wasn't willing to give him a third.
- Dinah and Curtis can't reconcile Oliver spying on them — so they leave.
- Throw the Dog a Bone: Thea gives Rene a courtesy dance for giving a nice wedding speech.
- Tranquil Fury: Oliver has only one thing to say when he finds out that Rene is the traitor — Get Out!.
- Undying Loyalty: Averted, Rene's loyalty to Oliver doesn't extended so much as to go to jail from him.
- The Unreveal: The last time Oliver and Cayden were face-to-face the latter indicated that he's targeting the Green Arrow for revenge based on "what happened to his son". Although the two meet again here, we don't find out any more about it.
- Villain Respect: Cayden James is impressed with Quentin for telling Oliver not to trade his life for the destruction of the city.
- We Were Your Team: The recruits from season six leave Team Arrow, leaving only the original members.
- Wham Episode:
- Oliver kicks Rene off the team and Dinah and Curtis leave for him not trusting them.
- Cayden James, Anatoly, Ricardo Diaz, Black Siren, and Vigilante aren't a Big Bad Ensemble, they are a Legion of Doom with James in charge.
- Wham Line: Rene reveals that he turned traitor to Agent Watson, under threat of never seeing Zoe again.
- Wham Shot: Cayden James, Anatoly, Ricardo Diaz, Black Siren, and Vigilante all coming together, revealing they've been one huge gang all along.
- What the Hell, Hero?:
- Everyone on Team Arrow is naturally furious that Rene never told them he was being blackmailed by Agent Watson and that he just gave in to her threats.
- Dinah and Curtis are angry how Oliver and Felicity invaded their privacy. In the end they decide they can't forgive them so they leave the team.
- Worf Had the Flu: Due to just having woken up from a 6 months coma, Thea gets quite easily trounced by Black Siren.
