|6.2||Rated 6.2/10 (933 votes)|
A deadly new criminal, Tobias Church, threatens Star City, which forces Oliver to consider forming a new team of superheroes to help him do battle. In flashbacks, Oliver faces off against the Bratva in Russia.
Oliver recruits Curtis, Wild Dog and Evelyn Sharp for his team, but his training methods prove to be too much for some to handle. In flashbacks, Oliver continues his initiation into the Bratva.
The Green Arrow is forced to face a powerful new drug dealer when Wild Dog goes off on his own.
Oliver and Lyla team up on a secret mission for Diggle. Felicity finds out and disapproves of the plan and opts to stay behind. When Tobias Church launches a deadly assault against the city, Felicity must decide if she wants to send the recruits out sans the Green Arrow.
When Tobias Church captures and tortures one of Oliver's new recruits, Oliver must turn to an old friend, Christopher Chance AKA the Human Target, for help. Meanwhile, Felicity's worlds collide when Detective Malone joins the ACU.
Prometheus claims two more victims, and Oliver realizes that the killings are related to the people on his father's list. His recruits aren't happy to hear that Oliver used to be a serial killer. In the past, Oliver finally meets Kovar and may not live to regret it.
When the bodies of two criminals are dropped at SCPD, Oliver realizes there is a new Vigilante in Star City. The team is split about whether they should stop someone who is helping keep the city safe. Diggle is frustrated with his new situation and Thea fights for Lance who confesses a shocking secret. Meanwhile, in the flashbacks, Oliver finally sits down with Konstantin Kovar.
Oliver wakes up to a life where he never got on The Queen’s Gambit. Robert and Moira Queen are alive and well. Laurel is his loving fiancée and their wedding is imminent. Everything seems perfect, but Oliver starts to notice small imperfections that make him question this new reality. Meanwhile, Felicity and the recruits take on a new threat with help from The Flash and Supergirl.
After Prometheus attacks Curtis, Oliver realizes Prometheus knows all of Team Arrow’s secret identities and is planning to come for them one by one. Felicity and Detective Malone discover a clue that links Prometheus to Oliver’s past.
Worried that Prometheus is right and he is truly a killer at heart, Oliver looks for any ray of hope and finds it in what seems to be the miraculous return of Laurel Lance. However Felicity, still reeling from Detective Malone's murder, is bent on revenge - she wants to stop Prometheus at any cost. While in prison, Diggle fights for his life.
During the S.T.A.R. Labs incident, CCPD undercover officer Tina Boland develops a sonic scream after watching her partner die at the hands of drug dealer Sean Sonus. In the present day, Adrian tells Oliver that the NSA had been investigating Walker, but its file has disappeared. While Felicity tries to locate it, Oliver takes Rene and Curtis to Hub City to recruit Tina. She initially refuses to join, but the team intercepts her attacking Sonus, who is also a metahuman with sonic powers. Sonus escapes, and Oliver reveals his identity to convince Tina to let him help her. Oliver's team helps her defeat the dealers during a shipment, but Oliver fails to dissuade her from killing Sonus. Meanwhile, Felicity meets with a hacktivist whom she inspired during her college days, who gives her the file against Walker along with a cache of other secret information. With the file, Adrian manages to get John released. Tina meets Oliver and agrees to join the team, revealing that her real name is Dinah Drake. In flashbacks, Talia helps Oliver kill an important associate of Kovar's. She also urges Oliver to become the avenger his father wanted him to be for Starling City.
In flashbacks, Oliver and Talia kill an illegal drug merchant from Robert Queen's list. Talia again presses Oliver to return home, but he chooses instead to help Anatoli kill Gregor. In the present, the team learns that Walker is in Russia for a deal with Markovian terrorists. Oliver takes everyone except Rene, who is tasked to help Quentin with his interview with Susan. Anatoli refuses to help Oliver unless he does something criminal in return, which Oliver initially refuses. After Felicity blackmails a Russian analyst, the team manages to capture Walker's henchman, whom John tortures, but to no avail. In order to prevent John and Felicity from acting against their own morals, Oliver accepts Anatoli's terms and attacks a rival with Dinah's assistance. Team Arrow and the Bratva intercept Walker's deal; and John decides to spare Walker, who is arrested by the Military Police, while Rory uses his rags to contain the nuclear blast. Upon returning, Oliver sleeps with Susan, who later stealthily finds out his alter-ego after learning about a similar hooded vigilante in Russia five years prior through her source. Rory tells Felicity that his rags do not function anymore, and he needs to leave temporarily. Meanwhile, with Rene's help, Quentin's interview is successful.
16 months ago, Rene watched his wife, an addict, being killed by a dealer in front of the former's daughter, Zoe, who was transferred to foster care; and Rene was prohibited from meeting her. He was inspired by the Green Arrow killing Darhk and saving Star City, deciding to start his vigilantism. In the present, an armed man attacks the city hall and kills and wounds several staff members. Felicity identifies the shooter as James Edlund, a former clerk and a gun control proponent who lost his family in a shootout months ago. Thea and Quentin encourage Oliver to deal with the situation as the mayor, not the vigilante. The latter decides to work with the city council for a gun control act. Rene and Curtis locate Edlund's hideout and find his next target, where Oliver confronts Edlund as the mayor and dissuades him from killing anyone, convincing him to surrender. Oliver reaches to an agreement with the council over the act. Curtis promises Rene to help him get to Zoe legally. Meanwhile, John convinces Dinah to return to normal life. She enlists in SCPD.
China White, Cupid and Liza Warner break out of Iron Heights and head to Star City for revenge. Oliver tries to bring in the newly formed girl gang but the ACU intervenes mid-fight. To his surprise, they are there to arrest the Green Arrow for the murder of Det. Malone. Meanwhile, Lance feels responsible for the prison break after Warner tells him she heard about him working with Damien Darhk.
When Vigilante attacks Oliver while he's acting as mayor, Diggle leads the team on a mission to stop Vigilante for good.
Oliver gets closer to the truth about Prometheus. Meanwhile, Helix refuses to continue helping Felicity until she does a favor for them.
Prometheus goes to extreme lengths to destroy Oliver. In flashbacks, Oliver's violent tendencies come to a head in a confrontation with Anatoly.
Diggle and Felicity are shocked by Oliver's decision to ask the Bratva for help in taking down Prometheus.