After a body is found strung up in the Wildcat gym, Ted Grant becomes the main suspect. Oliver and Laurel argue over Ted’s innocence. Meanwhile, in flashbacks, when Maseo needs Oliver to remember where an informant for China White stashed key information, he asks Tatsu to help jog Oliver’s memory. Roy shares a secret with Felicity.

The episode was rated 7.86 from 3361 votes.

In the aftermath of Oliver’s fight with Ra’s al Ghul, Diggle and Arsenal continue to protect the city in the Arrow’s absence. However, after three days without hearing from Oliver, they begin to fear the worst may have happened to their friend. Felicity refuses to believe that Oliver could be dead until Merlyn pays the team a surprise visit. Thea suspects there is something more behind Oliver’s disappearance and asks Merlyn for a favor. Meanwhile, Ray tests a part of his new suit and Laurel takes up the mantle of the Black Canary.

The episode was rated 7.88 from 2598 votes.

During an attack on the mayor’s office, Ray is critically injured. Felicity is pleasantly surprised when her mother, Donna Smoak, shows up at the hospital to offer her support. With the SCPD out in full force looking for the assailant, Oliver and his team work hard to stay one step ahead of the police to find the man responsible. However, things come to a head when Ra’s al Ghul kidnaps Captain Lance.

The episode was rated 7.92 from 3524 votes.

Lance calls the Arrow when another archer appears in town and starts skewering businessmen. Diggle uses A.R.G.U.S. to find the archer’s identity; he is a man named Simon Lacroix, who goes by the codename Komodo. However, the team hits a rough patch with the mission and gets help from a surprising source — Laurel. Meanwhile, Oliver begins to worry that he hasn’t heard from Thea, which forces Roy to tell him the truth about why she left town. Ray Palmer pursues Felicity. In the flashback, Maseo tells Oliver that Amanda Waller has ordered his first kill. As Oliver looks down the scope of the rifle, he sees the target is his best friend, Tommy. Despite her promise to her sister, Laurel debates sharing a secret about Sara with Lance.

The episode was rated 7.92 from 3610 votes.

Oliver decides it’s time for Thea to come back to Starling City, so he packs for Corto Maltese, where Felicity has traced Thea’s whereabouts. Lyla asks Diggle to go with Oliver because one of her field operatives, Mark Shaw, has gone dark in Corto Maltese and she’d like him to look into it. Feeling responsible for Thea’s departure, Roy joins Oliver and Diggle on their journey. Shaw double-crosses Diggle, putting numerous A.R.G.U.S. agents, including Lyla, at risk. Laurel meets Ted Grant, and Felicity adjusts to her new job.

The episode was rated 7.95 from 3530 votes.

A furious Nyssa confronts Oliver about Sara. When Oliver learns Malcolm Merlyn is alive, he suspects Merlyn killed Sara. Oliver and Nyssa join forces and go after the Dark Archer, intent on bringing Sara’s killer to justice. Laurel keeps her distance from Nyssa, as she blames her sister’s death on her involvement with the League of Assassins. Meanwhile, Oliver and Roy work on repairing their respective relationships with Thea, who has returned home. Nyssa discusses Oliver with her father, Ra’s al Ghul.

The episode was rated 7.95 from 3469 votes.

Oliver/Al Sah-him finishes his training and is left with two final tasks to become the next Ra’s al Ghul. Ra’s threatens Nyssa and delivers some shocking news. Meanwhile, Malcolm makes a surprising offer to Team Arrow and Thea goes to see Roy.

The episode was rated 7.97 from 3309 votes.

Malcolm is captured by Ra’s al Ghul and taken to Nanda Parbat. Because of his love for Thea, Oliver considers saving Merlyn. Ray is obsessed with finishing his Atom suit so he can save the city but Felicity fears he is heading down the same path as Oliver and tries to pull him out of the lab.

The episode was rated 7.97 from 2784 votes.

Ra’s al Ghul finally makes Oliver an offer he can’t refuse. The team joins Oliver on his journey to Nanda Parbat where a heartbroken Felicity decides to take matters into her own hands.

The episode was rated 8.03 from 3628 votes.

With crime in Starling City at an all-time low thanks to the Arrow and his team, Oliver thinks he can finally balance being both the Arrow and Oliver Queen and asks Felicity out on a date. However, when a new villain emerges, who has claimed the name Vertigo from the recently deceased Count, Oliver is caught off-guard and someone close to him is hurt. Oliver and a newly suited up Roy take on the Count. Meanwhile, Diggle becomes a father, Lance is promoted to Captain, Laurel joins Arrow’s inner circle and Felicity gets a part-time job at a tech store to make ends meet. Also, Oliver fights to regain his company, Queen Consolidated, but comes up against a very worthy opponent — the charming Ray Palmer.

The episode was rated 8.03 from 3972 votes.

Everyone’s lives are in danger as Ra’s al Ghul puts forth his final plan. Oliver/Al Sah-him must decide if he’s strong enough to take on this new role and what it will mean for everyone on Team Arrow, and his soul.

The episode was rated 8.05 from 3292 votes.

Lance continues his mission to take down the Arrow so Felicity orders Oliver to keep a low profile. However, when a meta-human named Jake Simmons, who kills people with blasts of energy and plasma, starts terrorizing Starling City, Oliver is forced to ask Ray for help. The unlikely duo is forced to team up to save the city.

The episode was rated 8.08 from 3532 votes.

When a cyber attack brings Starling City to its knees, Oliver and Felicity are pushed to their limits to contain the destruction. Life gets even more complicated for Felicity when her mother, Donna, stops by for a surprise visit. Meanwhile, Ted Grant questions Laurel’s motives, and Thea buys an apartment with Malcolm’s “estate” money, which infuriates Oliver.

The episode was rated 8.12 from 3518 votes.

Oliver, Arsenal and Diggle track down the location of a boomerang-wielding killer named Digger Harkness, but are surprised when they come face to face with an A.R.G.U.S. team. Diggle asks Lyla why A.R.G.U.S. is involved but she defers until Harkness attacks the building, killing several agents and targeting Lyla. The Arrow joins the fight and gets help from an old friend — The Flash. Harkness manages to get away and Oliver teams up with Barry again to find him before he can get to Lyla. When Harkness plants five bombs in the city that are timed to explode at the same time, both teams must come together to save the city.

The episode was rated 8.25 from 3480 votes.

Nyssa returns to Starling City and tells Oliver that her father, Ra’s al Ghul has given Oliver 48 hours to find Sara’s killer or the League of Assassins will start killing the citizens of Starling City. Laurel is stunned when her father delivers a very special Christmas gift — her mother, Dinah. Meanwhile, Ray tries to make amends with Felicity and Oliver sets a meeting with Ra’s al Ghul.

The episode was rated 8.46 from 3444 votes.