Arrow Season 4 Episodes

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Season 4 Episode Guide

Episode 1 - Green Arrow

In the season four premiere, Oliver and Felicity must return home to help the team against attacks by "ghost" assassins led by Damien Darhk (Neal McDonough).


Episode 2 - The Candidate

When an old family friend, Jessica Danforth (guest star Jeri Ryan), tells Oliver and Thea that she is going to run for mayor, both Queens are concerned – considering the last three mayors have been murdered. Despite their protests, Jessica makes her announcement; so the Green Arrow and Speedy vow to protect her. Meanwhile, Thea begins to exhibit effects from the Lazarus Pit. In addition, Felicity is faced with a tough business decision and looks to one of her employees, Curtis Holt (guest star Echo Kellum), for help.


Episode 3 - Restoration

The growing tension between Oliver and Diggle puts both their lives at risk when they go after Damien Darhk and a H.I.V.E. deployed meta-human. Meanwhile, Laurel talks Thea into returning to Nanda Parbat to ask her father to put Sara into the Lazarus Pit. However, Laurel is surprised when Nyssa al Ghul (recurring guest star Katrina Law) refuses to do it.


Episode 4 - Beyond Redemption

Laurel must deal with the repercussions of taking Sara (guest star Caity Lotz) to Nanda Parbat. Meanwhile, Oliver asks Captain Lance for a favor. And while he's not surprised at the response, he is surprised at what he finds out next.


Episode 5 - Haunted

When things take a turn for the worse with Sara (guest star Caity Lotz), Oliver calls in a favor from an old friend who deals in the mystical, John Constantine (guest star Matt Ryan).


Episode 6 - Lost Souls

Felicity is frantic when she learns that Ray Palmer (guest star Brandon Routh) is alive and being held by Damien Darhk. Felicity's guilt over not finding Ray sooner causes tension between her and Oliver. Meanwhile, Sara joins Laurel, Thea and the team on a rescue mission for Ray. However, the effects of the Lazarus Pit take over and threaten to jeopardize the entire operation. And Felicity's mother, Donna (recurring guest star Charlotte Ross) returns to Star City.


Episode 7 - Brotherhood

Team Green Arrow's ongoing battle with Damien Darhk is complicated by a shocking revelation. Meanwhile, Thea's bloodlust returns and she loses control in front of Alex (guest star Parker Young).


Episode 8 - Legends of Today

In its second major crossover event with Arrow, Vandal Savage (guest star CASPER CRUMP) arrives in Central City and sets his sights on Kendra Saunders. After Vandal attacks Kendra and Cisco, they turn to Barry for help. Realizing how dangerous Vandal is, Barry takes Kendra to Star City and asks Oliver and the team to hide her until he can figure out how to stop Vandal. However, things quickly go from bad to worse when a man with wings AKA Hawkman (guest star FALK HENTSCHEL) shows up and flies off with Kendra. Meanwhile, Harrison develops a serum to make Barry run faster and asks Jay to test it out.


Episode 9 - Legends of Yesterday

In part two of the epic crossover event with The Flash, Oliver and Barry Allen (guest star Grant Gustin) take Kendra Saunders (guest star Ciara Renée) and Carter Hall (guest star Falk Henstschel) to a remote location to keep them hidden from Vandal Savage (guest star Casper Crump) while they figure out how to defeat him. Malcolm arranges a meeting between Vandal, the Green Arrow and The Flash that doesn't go as planned. Meanwhile, Felicity, Thea, Diggle and Laurel work with Team Flash to come up with a weapon powerful enough to destroy Vandal Savage.


Episode 10 - Dark Waters

After the city is attacked again, Oliver makes a bold move against HIVE. Malcolm checks in on Thea and leaves her with a warning. Things take a horrible turn when Damien Darhk retaliates in a brutal manner at Oliver's mayoral holiday party.


Episode 11 - Blood Debts

Oliver must deal with the devastating consequences of Darhk's last attack. Seeking revenge, Oliver goes on a brutal manhunt looking for Darhk.


Episode 12 - A.W.O.L.

Diggle must learn to trust his brother Andy (guest star Eugene Byrd) when an enemy of their wartime past, an agent of the criminal organization Shadowspire, pays a visit to Star City. However, Diggle learns more than he bargained for about their shared time at war. Meanwhile, Oliver has to learn a whole new way of life.


Episode 13 - Unchained

The team faces off against a formidable villain nicknamed The Calculator (guest star Tom Amandes). Meanwhile, Nyssa (recurring guest star Katrina Law) makes her move and Roy Harper (former series star Colton Haynes) returns to Star City.


Episode 14 - Sins of the Father

Oliver receives an offer from Nyssa that is hard to refuse. Meanwhile, Thea continues to battle her bloodlust, and Malcolm steps in to help his daughter. Laurel has a heart-to-heart talk with Nyssa.


Episode 15 - Code of Silence

Oliver and the team uncover HIVE's plan to take out Team Arrow once and for all. With HIVE's next attack imminent, Lance wonders if Donna is safer without him in her life. Meanwhile, with the wedding fast approaching, Oliver begins to feel guilty that he hasn't told Felicity about his son.


Episode 16 - Taken

Realizing he needs help battling Darhk, Oliver calls in an old friend — Vixen (guest star Megalyn E.K.). Using her magical ability to summon animal powers, Vixen gets a lock on Darhk's location and the team goes to war. Meanwhile, Thea has a heart-to-heart talk with Malcolm.


Episode 17 - Broken Hearts

A heartbroken Cupid (recurring guest star Amy Gumenick) returns to wreak havoc on Star City with one goal — to destroy anyone in love. When the team learns that she's targeting couples on their wedding day, the recently broken up Oliver and Felicity decide to pose as bait with a fake wedding.


Episode 18 - Beacon of Hope

Brie Larvan aka the Bug-Eyed Bandit (returning guest star Emily Kinney) breaks out of jail and turns up at Palmer Tech threatening to kill everyone unless she gets the biochip that is implanted in Felicity's spine. When Oliver realizes that Felicity, Thea and Donna are trapped in Palmer Tech with everyone else, he looks to a surprising ally to help Team Arrow save the day.


Episode 19 - Eleven-Fifty-Nine

Oliver and Diggle learn that Merlyn is going to break Darhk out of prison. Meanwhile, Laurel gets a surprising offer.


Episode 20 - Canary Cry

Oliver and the team struggle to come to terms with Laurel's death, especially Diggle who is overwhelmed with guilt for choosing to believe Andy had changed. Meanwhile, Lance refuses to believe his daughter is really gone and asks Nyssa al Ghul to help bring her back. A recent Black Canary sighting in Star City only seems to prove his theory that Laurel isn't actually dead.


Episode 21 - Genesis

As Oliver and Felicity look for a magical solution to defeat Darhk, a vengeance-driven Diggle gets a lead on Andy's whereabouts and heads off to confront his brother. Meanwhile, Alex (guest star Parker Young) takes Thea on a vacation that quickly turns into a nightmare.


Episode 22 - Monument Point

When Team Arrow learns what Damien Darhk's devastating next move is, Felicity realizes she needs to ask her father, Noah Kuttler (Tom Amandes), for help. Noah and Oliver have a heart to heart talk that leaves Oliver rattled.


Episode 23 - Lost in the Flood

Following the shocking events in the previous episode, Oliver and Diggle race to rescue Thea, while Felicity, Curtis and Noah join together to stop Darhk.


Episode 24 - Schism

In the season four finale, Oliver teams up with a surprising force in an attempt to stop Damien Darhk and his magic once and for all.


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