Rene starts to relive painful memories from his past after a traumatic attack at City Hall. Meanwhile, Oliver believes that the best way to stop the one responsible for the attack is to do it as Mayor Queen rather than Green Arrow.moreless
After Walker escapes custody, he flees to Russia to sell the nuclear trigger and the team goes after them... even though the mission will cost them one of their own. meanwhile, Rene stays behind to help Quentin with an interview with Susan.moreless
While the team tracks down a meta to become the new Black Canary, Felicity rediscovers her hactivist roots. In the past, Talia offers to help Oliver get revenge on Kovar if he'll accept her help dealing with the monster within.moreless
The team deals with Laurel's miraculous return, but soon discovers that everything isn't what it seems. Meanwhile, Curtis deals with the aftermath of Paul leaving him, and Felicity comes to terms with Billy's death.moreless
The team realizes that Prometheus knows who they really are after the killer attacks Curtis. Meanwhile, Billy finds a clue to Prometheus' identity and sends it to Felicity... before the killer captures him.moreless
Oliver finds himself in the life he would have had if the Queen's Gambit hadn't sank and he hadn't been stranded on the island. Meanwhile Felicity calls in Flash and Supergirl to help her and the recruits battle a superpowered thief who has stolen a piece of technology that she needs to find their missing teammates.moreless
Oliver faces a new vigilante who reminds him of his killing days when he first returned from the island. Meanwhile, Quentin tells Thea about his blackouts, and Prometheus makes contact with his mole. In the past, Kovar tells Oliver about his new arrangement with the Bratva.moreless
Oliver realizes that Prometheus' current murder spree is based on his own killings when he first returned from the island... and keeps the information from the recruits. When they find out anyway, they're none too happy. Meanwhile, Felicity uses her relationship with Billy to steal evidence, and wonders whether to come clean with him about her second life.moreless
When Church learns who Green Arrow really is, Oliver brings in a man to impersonate him while he tries to figure out what Church is up to. In the past, Oliver learns that passing the Bratva tests don't mean that every member accepts him.moreless
Lyla asks Oliver to help break Diggle out of military prison. When Felicity disapproves of the plan, Oliver goes in alone... unaware that Church has a new plan to secure his hold on Star City.moreless
Arrow and his team go up against a super-enhanced drug dealer that no longer feels pain. To beat him, Arrow will have to trust his recruits. Meanwhile, Thea gets a harsh listen in the power of the press, while Diggle questions his life after he is imprisoned for a crime he didn't commit.moreless
Crime lord Tobias Church moves into Star City, ready to unite all of the mobs under one rule. Meanwhile, Oliver tries to deal with his lives as both mayor and vigilante, but finds it tough because his team has left. In the past, Oliver is forced to join the Bratva to get at the man he has promised to kill.moreless
After the death of his wife, Damien prepares to destroy the world rather than bear the loss. Oliver turns to an unexpected ally to defeat the black magician.
while Green Arrow and Spartan infiltrate Tevat Noah to find Thea, Felicity and her father work with Curtis to stop HIVE from accessing Rubicon.
As Damien prepares to initiate nuclear armageddon, the team races against the clock to find the one man who can stop the launches: the Calculator.
While Oliver and Felicity make contact with a shaman who may be able to show Oliver how to oppose Damien, Thea takes a weekend off with Alex. Meanwhile, Andy comes after Diggle but he proves to be the bait in a much larger plan.moreless
While Quentin tries to find a way to bring Laurel back, the team deals with her death... and a new Black Canary who is out for revenge at any cost.
Malcolm prepares to break Damien out of jail but discovers that a key piece of the Khushu Idol is missing. Meanwhile, Laurel receives a job offer.
The Bug-Eyed Bandit hacks the prison computers and engineers an early release for herself... and then goes Felicity and her spinal implant. Meanwhile, Damien adjusts to life in prison and makes contact with an ally.moreless
Cupid returns and begins killing celebrity newlyweds. To lure her into a trap, Oliver and Felicity go through with their marriage, even though they've recently broken up.
To track down William and deal with Damien's mystic powers, Oliver call in a mystic ally of his own: Vixen, who can channel the spirits of any animal.
Oliver prepares to go up against Damien's wife in a debate of mayoral candidates. However, first he has to deal with a team of villainous demolition experts who plan to hit a major target. Meanwhile, Donna has second thoughts about her relationship with Quentin, and Curtis prepares a special engagement gift for Felicity.moreless
Nyssa and Malcolm make war on each other when Malcolm refuses to step down as Ra's to save Thea's life. Meanwhile, Felicity is reunited with her father and he reveals that he's the Calculator... and that he wants a chance to get back into her life.moreless
While the team battles a former ally working with a new villain, Felicity decides to step aside rather than give a presentation that can save Palmer Tech. In the past, Oliver fights the darkness within him with the help of an old friend.moreless
Team Arrow takes on Shadowspire, an elite black-ops military team gone rogue. When Diggle learns that Andy is connected to them, he turns to his brother for help. Meanwhile, Felicity deals with her first day back on the job as the computer hack for the team.moreless
While Oliver and the team hunt down Damien, Lyla gives Diggle some advice on how to deal with Andy. In the past, Reiter makes a deal with Oliver.
After Damien launches an attack on Oliver and his people at the bay, Oliver retaliates by exposing Damien and HIVE to the public. However, Damien has another trick up his sleeve. Meanwhile, Felicity finds Oliver's engagement ring, and Diggle tries to get the truth from an imprisoned Andy.moreless
Teams Arrow and Flash go to ground to come up with a plan to stop Vandal. Malcolm arranges a meeting with the immortal villain, but it doesn't go well. While the teams try to come up with a plan, Carter tries to reawaken Kendra's memories of her past lives.moreless
Diggle discovers that his brother is one of Damien's Ghosts, and Oliver insists on trying to rescue him. Meanwhile, Damien offers Oliver a deal, and Ray contemplates his future now that he's back from the dead.moreless
Team Arrow launches an attempt to rescue a miniaturized Ray from Damien's stronghold. Meanwhile, Felicity begins to wonder if she's losing herself in her relationship with Oliver, and Donna arrives in Star City to pay her daughter a visit.moreless