The team captures Vandal Savage, but Kendra struggles with whether to kill him or not when he tells her he can reunite her with Carter. Rip decides they will deliver Savage to the Time Masters but that doesn't sit well with Snart and Rory. Meanwhile, Savage taunts Ray about his place in Kendra's life.moreless
While Quentin tries to find a way to bring Laurel back, the team deals with her death... and a new Black Canary who is out for revenge at any cost.
Nyssa and Malcolm make war on each other when Malcolm refuses to step down as Ra's to save Thea's life. Meanwhile, Felicity is reunited with her father and he reveals that he's the Calculator... and that he wants a chance to get back into her life.moreless
While the team battles a former ally working with a new villain, Felicity decides to step aside rather than give a presentation that can save Palmer Tech. In the past, Oliver fights the darkness within him with the help of an old friend.moreless
While Oliver and Diggle set aside their differences to take on a new metahuman in Starling City, Thea and Laurel travel to Nanda Parbat to resurrect Sara and help Thea overcome her growing bloodlust.moreless
To stop Ra's from wiping out Starling City's population, Oliver is forced to reveal his true loyalties. However, when Ra's escapes, Oliver is forced to turn to his friends for help... but they still don't trust him after his betrayal.moreless
The mole within the League of Assassins sends an unexpected ally to Starling City to summon Diggle, Felicity, and Laurel. Meanwhile, Thea is reunited with Roy.. In the past, Oliver and Maseo capture Shrieve and attempt to get the cure from him.moreless
While Ra's grooms Oliver to become his successor, Nyssa continues her training of Laurel in Starling City. However, Ra's soon sends men to bring his daughter home, and Laurel asks Diggle and Felicity to help protect her friend.moreless
While Felicity decides whether she will help an injured Ray with an experimental treatment that could kill him, Oliver and his team go on the run when Quentin issues a warrant for the hero's arrest. Complicating matters, Ra's abducts Quentin as the next stage in his plan to discredit Oliver.moreless
Oliver returns from Nanda Parbat with Malcolm and Diggle after hearing Ra's out, and questions his mission. Meanwhile, a new villain, Murmur, steals a shipment of industrial diamonds. And Quentin turns against Arrow after learning the vigilante knew the truth about Sara's death.moreless
After discovering how he used her, Thea betrays Malcolm to the League. Oliver tries to stop them to spare Thea the guilt of killing her parent, and travels to Nanda Parbat with Diggle. Meanwhile, Felicity tries to get Ray to focus when she learns that he's on the ragged edge.moreless
Ra's al Ghul gives Oliver 48 hours to find Sara's murderer... or watch as the League kills 50 citizens a day. Meanwhile, Ray tries to apologize to Felicity for kissing her, and Oliver discovers who Sara's killer is.moreless
Nyssa believes that Malcolm is Sara's killer, but Oliver isn't convinced. As they seek the truth, Laurel seeks revenge for her sister's murder and Roy tries to repair his relationship with Thea.
Oliver goes to Corto Maltese to bring Thea home, while Lyla asks Diggle to find a missing ARGUS operative. Meanwhile, Ray gives Felicity her first assignment.
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
Oliver and Quentin try to convince Sara to stay in Starling City to help Laurel as she tries to deal with her drug addiction. However, Sara soon realizes that she is putting her family in danger when a member of the League of Assassins abducts Dinah and threatens to kill her if Sara doesn't return to the fold.moreless
Narrowly surviving his first day in the game, Ian finds himself and his family in further danger as tactics taken by the game's creators continue to infiltrate his life.
When a shortage in supplies has the rebellion about to fail, Spartacus tries his best to give his men hope.
Horatio and an old enemy come together again because of scandal, Calleigh makes a decision that could affect her career and her relationship with Eric.
Spartacus has to once again use his leadership skills to convince his band rebels to unite against the Roman assault. Lucretia struggles to get rid of those men standing in the way of her fate.moreless
While Spartacus finds an opportunity to get revenge, Glaber is surrounded by intrigue.
Spartacus and his group of rebels attempt to free those who became slaves by falling in foreign wars while Lucretia manages to recruit one of her husband's former gladiators.
Spartacus and his rebels train hard to keep their new sanctuary safe while Glaber's forces are made stronger with the enlistment of some new deadly recruits. Lucretia and Ilithyia become close again.
In an ironic twist of fate, a gladiator from the house of Batiatus will stand in the way of Spartacus trying to free Crixus from Roman captivity.Ilithyia's scheming puts her marriage to Glaber at risk.moreless
Spartacus seeks the safety of the woods for his surviving men while Crixus finds himself revisiting past horrors. Meanwhile, Lucretia spies Ilithyia's affairs.
Spartacus is forced to mediate when the gladiators are close to divide into groups after news of Naevia's fate reaches them. Lucretia exchanges a long-held secret for some information and an attack puts the rebels at risk.moreless
Under Spartacus' leadership a villa is liberated. Oenomaus, however, decides to throw himself into the brutal pits.Despite his wife's protests Glaber decides to support Lucretia's prophecies.
Spartacus realizes that becoming the leader of a mass of freed slaves can be challenging and he struggles to keep the rebellious group intact when news of Claudius Glaber's arrival in Capua reaches him.moreless