Season 2 Episodes
01: City of Heroes
Diggle and Felicity travel to Lian Yu in search of Oliver, who left Starling City after The Undertaking. Convinced to return home, Oliver finds that things are in worse shape than he thought—Isabel Rochev (guest star Summer Glau) is preparing a hostile takeover of Queen Consolidated, Thea refuses to visit Moira in jail, Roy is trying to fill the void left by the Arrow’s absence and Laurel is working with the District Attorney’s office to take down the vigilante. Meanwhile, flashbacks to the island show Slade, Shado (guest star Celina Jade) and Oliver in a desperate situation.
Oliver finds out the medicine that is being sent to Glades Memorial is being hijacked by thieves. Without an influx of supplies, the hospital will close. Roy attempts to stop the thieves, but he fails and is arrested by Officer Lance. Oliver gets into a heated battle with China White (guest star Kelly Hu) and her new partner, Ben Turner, AKA the Bronze Tiger (guest star Michael Jai White), over the supplies. Meanwhile, Laurel makes plans to catch the Arrow, and Thea gives Roy an ultimatum.
03: Broken Dolls
Lance learns a criminal named Barton Mathis (guest star Michael Eklund), who he put away years ago, broke out of prison during the quake and is back to torturing and murdering women. Felicity offers herself as bait so Arrow, Diggle and Lance can catch this villain, but the plan goes awry. Furious, Mathis kidnaps Laurel in retaliation and plans to murder her while Lance watches. Meanwhile, Thea and Oliver are stunned when District Attorney Adam Donner (guest star Dylan Bruce) seeks the death penalty for Moira. Oliver asks Roy to help him find the Canary.
Oliver discovers a man who goes by the name “The Mayor” (guest star Cle Bennett) is bringing illegal guns in to The Glades, so Oliver sponsors a “Cash for Guns” event to help clean up the city. Unfortunately, The Mayor crashes the event with his gang and seriously injures Sin (guest star Bex Taylor-Klaus). The Canary is furious when she learns her friend is in the hospital and sets out for revenge. Meanwhile, Felicity stuns Oliver with a bit of information about the Canary, Donner (guest star Dylan Bruce) asks Laurel to dinner and Diggle reconnects with an old friend.
05: League of Assassins
While Oliver tends to the Canary’s wounds, he tries to get her to talk about where she came from but she refuses. However, after Oliver and the Canary are attacked at the Queen mansion by a trained killer from the League of Assassins, she confesses to how she’s connected with the nefarious group. Meanwhile, with Moira facing multiple counts of murder and conspiracy for her part in the destruction of The Glades, the Assistant District Attorney (guest star Dylan Bruce) offers her a choice—plead guilty now and avoid the death penalty or take your chances in court. Thea begs her mother to fight for her life, but Moira seems resolute about taking the offer. Meanwhile, Oliver is furious with Laurel for joining the prosecution’s team on his mother’s case.
06: Keep Your Enemies Closer
Amanda Waller (guest star Cynthia Addai-Robinson) sends A.R.G.U.S. agents to kidnap Diggle. Waller informs Diggle that Lyla (guest star Audrey Marie Anderson) has gone missing after following a lead on Deadshot (guest star Michael Rowe) in Moscow. When Diggle tells the team he’s headed to Russia to rescue Lyla, Oliver and Felicity decide to join him; but things get messy when Isabel (guest star Summer Glau) shows up on the tarmac and insists on joining Oliver’s “work trip.” Meanwhile, Moira’s lawyer, Jean (guest star Teryl Rothery), tells Thea that dating Roy, a known criminal, is hurting her mother’s case.
07: State v. Queen
Oliver is concerned when a mysterious illness sweeps the city, infecting hundreds of people, including Diggle. Oliver discovers Vertigo in Diggle’s blood and realizes The Count (guest star Seth Gabel) has broken out of prison and is once again distributing his drug. Meanwhile, Moira goes on trial for her participation in the Undertaking. ADA Adam Donner (guest star Dylan Bruce) collapses in court with Vertigo symptoms so Laurel must step in and try the case against Moira. Oliver is torn between standing by his family during the trial and catching The Count. However, things change when Felicity follows a lead and walks straight into a trap set by The Count.
08: The Scientist
A seemingly impossible robbery at Queen Consolidated’s Applied Sciences Division brings Central City police scientist Barry Allen (guest star Grant Gustin) to town. Citing a similar case back home, Barry offers to help Oliver and team with the investigation. Oliver senses there is more to Barry than meets the eye, but he’s distracted by the similarities between this current case and something that happened on the island. Meanwhile, Felicity takes a liking to Barry, which doesn’t go unnoticed by Oliver. Sin (guest star Bex Taylor-Klaus) asks Roy for help when a friend of hers goes missing. Roy is surprised when Thea not only encourages him to help but joins the search. Unfortunately, Sin’s friend is connected to Brother Blood (guest star Kevin Alejandro), and their search ultimately gets one of them seriously injured.
09: Three Ghosts
After a fight with Cyrus Gold AKA the Acolyte (guest star Graham Shiels), Oliver is drugged and left for dead. Determined to cure him, Felicity makes a risky decision. The cure causes Oliver to hallucinate, and what he sees forces him to confront his past. Meanwhile, Barry (guest star Grant Gustin) continues to help Felicity, and their connection grows stronger. The Arrow asks Lance to look into Gold, but when the stakeout on Gold goes bad, someone is killed. Roy is captured and tortured by Brother Blood (guest star Kevin Alejandro).
10: Blast Radius
Oliver must tackle a new threat to the city when bombs start to go off in Starling City. Felicity discovers the person setting them off is Mark Sheffner (guest star Sean Maher), a man who goes by the nickname Shrapnel. Arrow discovers Shrapnel’s next target is Sebastian Blood’s (guest star Kevin Alejandro) “Unity Rally” and tries to talk the alderman out of hosting it, but he refuses. Arrow sets off to stop the bombing, but Shrapnel tricks him and traps him in a bomb-laced antique store where he is unable to move without setting off the device. While Felicity helps Oliver, Diggle races to the plaza to find the bomb before it goes off. Meanwhile, Roy continues to hide his new strength from Thea, but after she witnesses his super strength in action at the rally, she demands answers. Laurel’s suspicions about Sebastian grow stronger once she learns that he grew up with Cyrus Gold, the man who killed Lance’s partner. After Donner (guest Star Dylan Bruce) refuses to help her investigate, she turns to Arrow for help.
11: Blind Spot
Oliver is conflicted after Laurel reaches out to the Arrow, asking him to investigate Sebastian Blood (guest star Kevin Alejandro). Oliver is unsure whether to believe her accusations against the man he has publically supported for mayor but decides to trust Laurel. However, when the pair gets too close to the truth, Sebastian exposes Laurel’s drug addiction and has her arrested. Meanwhile, Roy reveals his new super-strength to Sin (guest star Bex Taylor-Klaus) who wants to test out his abilities. Unfortunately, Roy isn’t able to contain his rage once unleashed and almost kills a man. Back on the island, Oliver is surprised when Sarah (guest star Caity Lotz) reveals a secret about Laurel.
Arrow offers to train Roy so he can learn to control his newfound super-strength. However, Roy is a rebellious student and refuses to listen unless Arrow reveals his true identity, which Oliver refuses to do. Meanwhile, the Bronze Tiger (guest star Michael Jai White) escapes from prison and steals Malcolm’s earthquake machine to sell to the highest bidder. Oliver, Diggle and Felicity attempt to stop the transfer, but Roy gets in the way, putting everyone in danger. Laurel is disbarred and spirals out of control. Moira is thrilled when Walter (guest star Colin Salmon) asks her to dinner, but his reason surprises her. Thea encourages her mother to ask Walter to reconcile.
13: Heir to the Demon
As Laurel continues to unravel, Oliver and Lance try to convince Sara (guest star Caity Lotz) to stay in Starling City and finally reunite with Laurel and Dinah (guest star Alex Kingston). However, Sara’s fellow League of Assassins member, Nyssa (guest star Katrina Law), comes to bring Sara back to the fold; but when Sara refuses, Nyssa kidnaps Dinah. Realizing she’s putting her family in danger by staying in town, Sara considers rejoining the league.
14: Time of Death
Oliver brings Sara into the Arrow team. Watching Oliver and Diggle spar with Sara and talk old scars, Felicity starts to feel left out. The team is investigating a villain named William Tockman, a.k.a. The Clock King (guest star Robert Knepper), who is a brilliant thief armed with technology that can open any bank vault in Starling City. After The Clock King infiltrates the computer systems in the lair, Felicity feels pressure to prove her worth. When she gets a lead on Tockman’s whereabouts, she heads out without the team, putting her in peril. Meanwhile, Oliver throws Sara a welcome home party, but Laurel refuses to attend. After Lance makes his case for a family dinner, Laurel acquiesces; but when Oliver shows up with Sara, she loses her temper on both of them.
15: The Promise
Oliver is shocked when he learns that Slade has come to Starling City. Back on the island, as Oliver, Slade and Sara prepare to take over the freighter from Ivo (guest star Dylan Neal), Sara pulls Oliver aside and tells him he needs to kill Ivo to prevent him from telling Slade what happened with Shado. Oliver feels immense guilt over the situation but realizes Slade’s growing rage from the Mirakuru makes him unpredictable and he could turn on his friends if he thinks Oliver is to blame. Oliver agrees to kill Ivo and the battle begins.
16: Suicide Squad
Following Slade’s return and his promise to make good on his threat to destroy Oliver’s loved ones, Oliver focuses all his energy on preparing for battle with his former friend. Sarah tries to help but fearing for her safety, Oliver pushes her away. Meanwhile, Diggle is recruited by Amanda Waller (guest star Cynthia Addai-Robinson) and A.R.G.U.S. to stop a warlord (guest star Lee Majdoub) he knew from his time in Afghanistan. Always the solider, Diggle agrees to help. However, he’s not prepared when Amanda introduces him to the rest of the team―Deadshot (guest star Michael Rowe), Bronze Tiger (guest star Michael Jai White) and Shrapnel (guest star Sean Maher), all criminals he and Arrow helped put away. Lyla (guest star Audrey Marie Anderson) defends the team and explains the world is a complicated place, but Diggle isn’t sure he agrees. When the mission takes a dangerous turn, Diggle is forced to make a difficult decision.
17: Birds of Prey
When Frank Bertinelli (guest star Jeffrey Nordling) is arrested, Oliver knows it’s only a matter of time before his daughter, Helena, AKA The Huntress (guest star Jessica De Gouw), returns to town. To make matters worse, Laurel is picked to try Frank’s case, putting her right in the path of Helena. Oliver tells Sara he will handle his ex-girlfriend, but when Helena takes hostages at the courthouse, including Laurel, the Canary will stop at nothing to save her sister. When The Huntress and Canary meet, an epic battle begins. Meanwhile, Roy realizes he needs to keep Thea safe but doesn’t like the way he is forced to go about it.
Slade makes his move against Oliver and the repercussions are enormous. While Oliver scrambles to protect his family, a key player in his team starts to question Oliver’s decisions. Meanwhile, Isabel (guest star Summer Glau) makes her move to take Queen Consolidated away from Oliver.
19: The Man under the Hood
Oliver, Canary, Diggle and Felicity return to the lair and find Slade waiting for them. An epic battle breaks out and one member of Team Arrow is sent to the hospital. Thea hits her breaking point, but just as Oliver is about to reach her, Slade intervenes and Oliver is faced with a choice―his battle with Slade or his family. Meanwhile, Laurel struggles with a new secret.
20: Seeing Red
The mirakuru sends Roy into an uncontrollable rage which he unleashes on the city. After Roy’s deadly fight with a police officer, Oliver realizes the mirakuru has taken over Roy completely and must figure out a way to stop him. Things get more complicated after Sara declares that Roy is too far gone and the only way to stop him is to kill him. Meanwhile, Thea believes she can break through to Roy, so she goes on camera at Moira’s campaign rally to lure him to Verdant. Her ploy works, but after Roy attacks Thea, Team Arrow unleashes on him.
21: City of Blood
After Slade threatens to take everything Oliver loves away, Oliver decides the fastest way to stop further bloodshed is to surrender to his enemy. Knowing that surrender will surely lead to Oliver’s death, Diggle and Felicity go to extreme measures to keep Oliver from confronting Slade. Meanwhile, Thea considers leaving town, and Laurel resumes her crusade against Sebastian Blood (guest star Kevin Alejandro). Finally, Slade unleashes his assault on Starling City.
22: Street of Fire
Oliver rallies his team as Slade’s soldiers attack the city. Felicity gets a call from S.T.A.R. Labs with game-changing news and Thea comes face-to-face with her father―Malcolm Merlyn (guest star John Barrowman).
Slade moves forward with his plan to kill one more person in Oliver’s life. Oliver has fought all year to be more than the killer he once was, but when Slade kidnaps someone close to Oliver’s heart, Oliver is pushed to the edge and realizes sometimes it takes doing the unthinkable to stop the monster. Meanwhile, Diggle takes on Amanda Waller (guest star Cynthia Addai-Robinson), with a little help from some friends; and Thea turns to Roy in her time of need.