After Adrian's torture, Oliver disbands the team but Diggle refuses to accept it sitting down. Meanwhile, Felicity gets in deeper with Helix and Curtis agrees to help her.
Adrian tries to break Oliver, forcing him to confess the one thing that he's never told anyone else. In the past, Oliver unleashes his inner darkness to take down Kovar once and for all.moreless
While Oliver discovers Prometheus' true identity and who has been helping him, Felicity calls upon Helix's resources to help her find Susan.
As mayor, Oliver faces impeachment and Vigilante. He's forced to rely on Adrian to defend him in court and his teammates to defend him against Vigilante. Meanwhile, Felicity continues using the Pandora information and Curtis hopes to be reunited with his husband.moreless
Arrow's efforts to bring a new villain team of China White, Cupid, and Liza Warner to justice are cut short when the ACU receives evidence tying him to Billy's murder. Meanwhile, Thea convinces Felicity to help her take down Susan.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
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
The victim: Dave Briggs, Jr., the killer: James Lennathan.
Dave is a video game designer working on his latest project, while James and his partner, Heather, are antique dealers. The case begins with a large pool of blood - but no body - in the game development studio. The team's only clue is a video showing Dave being decapitated while wearing a motion capture suit.
A police program that monitors suspicious behavior is introduced and Vega tries to get Akeela's help in landing Dash a position as the program's analyst. Meanwhile, Vega and Dash suspect Arthur is up to something.moreless
Sam tries to cure Dean and remove his demonic essence, but discovers that his brother doesn't want to be cured. Meanwhile, Crowley realizes that he will need someone to rally the forces of Hell behind to maintain their loyalty, and seeks out a dying Castiel.moreless
Crowley discovers that Dean is becoming increasingly difficult to control, and contacts Sam to make a deal. Meanwhile, Sam escapes from Cole and returns to his hunt for his brother, and Hannah tries to make a deal with Metatron to save Castiel's life.moreless
Oliver must fight to maintain his vow not to take a life when Slade kidnaps someone close to him. Meanwhile, it's Thea who turns to Roy for help, and Diggle takes on ARGUS.moreless
As Slade unleashes his wave of Mirakuru-enhanced soldiers on Starling City, Oliver and his team prepare to take them on. Meanwhile, Malcolm returns to town to meet his biological daughter.
Oliver decides the best way to protect everyone in the crossfire is to surrender himself to Slade before his friends are hurt further. When they realize what Oliver plans to do, Diggle and Felicity band together to stop him. Meanwhile, Laurel renews her investigation into Blood's activities, and Thea considers leaving Starling City.moreless
Arrow battles Slade, which results in one of his friends going to the hospital. Meanwhile, Thea hits her breaking point, forcing Oliver to choose between her or Slade.
Oliver attempts to protect his family after Slade launches the next stage of his plan for revenge for Shado's death and Oliver's betrayal. However, one of Oliver's team questions whether Oliver is seeing clearly. Meanwhile, Isabel schemes to take control of Queen Consolidated.moreless
The Huntress returns to town to kill her father, who has been arrested. Oliver promises Sara that he'll stop his ex-girlfriend. However, when Huntress takes a courthouse hostage, including Laurel, Sara steps in. Meanwhile, Roy realizes the cost he must pay to keep Thea safe.moreless
Oliver discovers that Slade is alive and intends to get revenge for Oliver's actions against him on the island. Meanwhile, in flashback Oliver and Sara prepares to take the Amazo, but Sara tells Oliver that he must kill Ivo to keep the doctor from revealing to Slade who is responsible for Shado's death.moreless
A.R.G.U.S. recruits Diggle to rescue Lyla, who has disappeared in Moscow following a lead on Deadshot. Oliver and Felicity volunteer to go with their friend, but run into trouble when Isabel insists on accompanying them. Meanwhile, Moira's attorney suggests that Thea stop dating Roy because it's hurting Moira's defense.moreless
A new crime lord, the Mayor, arrives in Starling City and starts bring in illegal guns. When Oliver tries to counter with a Cash for Guns event, Black Canary's friend sin is hurt and the female heroine sets out for revenge. Meanwhile, Diggle links up with an old friend and DA Donner asks Laurel out on a date.moreless
When Regina is accused of murder, everyone assumes the worst... except for Emma. Meanwhile, in the fairytale world, Snow and Charming must decide what to do with the Evil Queen once they've brought her to justice.moreless
Inspector Kiera Cameron finds herself in the year 2012 after a group of terrorists attempt to escape execution by traveling back in time. Keira must now stop the terrorists' reign of violence and find a way back to her family, in 2077. Adopting a new identity, Keira joins the VPD and befriends 17 year old Alec Sadler, who will one day come to create the technology upon which her world is built.moreless
Former Power Ranger actor Johnny Cage is down on his luck and trying to start up a new martial arts reality series.