Patterson and boyfriend, David, decode a tattoo clue that sends the team to the Centers for Disease Control (CDC). While there, the team discovers a hidden message on Jane’s body that uncovers a plot that could have disastrous global consequences.moreless
With Star City in peril from a new gang, Laurel and Thea go behind Diggle's back and ask Oliver and Felicity to come back to help them.
A technology whiz is killed in a supposedly secure building, and his valuable ideas are in danger of being stolen if the police don't solve the case quickly.
Jane learns she has the same Navy SEAL tattoo as a recently captured jewel thief. Meanwhile, a man from Jane's memory visits her; and Weller and Mayfair are unsure about Jane's role on the team.moreless
Police investigate when a cancer patient dies under puzzling circumstances.
An Air Force pilot with a destructive plan is on the team's radar thanks to one of Jane's tattoos. Meanwhile, Jane recalls bits and pieces of an unsettling memory; and Weller believes he might know who Jane really is.moreless
When a boy is kidnapped from his Tribeca family, Laura and team are thrust into a high-stakes race against time. They must uncover a host of family secrets in order to save the boy.moreless
An unidentified woman with amnesia is found in Times Square covered with tattoos, including one tattoo bearing an FBI agent's name, and the FBI realize that these marks are clues to solving crimes in the series premiere of this drama.moreless
In the first-season finale as Jake lies in critical condition, Laura and the team hunt his shooter, an assailant armed with a high-tech new weapon.
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
A young filmmaker is murdered, and an inexperienced detective causes problems with the investigation as Laura's team search for the killer.
A murdered club kid links back to a string of Diamond District jewelry heists. Jake's violation of divorced-parent etiquette forces Laura to reevaluate the seriousness of her relationship with Tony.
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
Ra's al Ghul makes Oliver an offer he can't refuse. The team join Oliver on his journey to Nanda Parbat where a heartbroken Felicity decides to take matters into her own hands.
Deathbolt, a metahuman who can fire plasma blasts from his eyes, goes on a killing spree in Starling City. Oliver is forced to lie low after Roy claims to be Arrow and lets himself be arrested, so Ray offers to help against the new threat. In the past, Oliver finds out who is responsible for the attacks on him and Maseo's family.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
After their second wedding, Lyla and Diggle are called away by Amanda to run a Suicide Squad mission to rescue a captive U.S. senator in Kasnia. Oliver tries to track down the Arrow imposter only to discover that there are more than one, and Ray learns that Oliver is Arrow.moreless
An intern at a tech start-up is killed, so the detectives investigate. Meanwhile, Laura has trouble scheduling alone time with the new man in her life.
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
Laura's ex-fiancé becomes a murder suspect in a former beauty queen's stabbing death. As Laura reminisces, the investigation leads the team into the world of holistic healing.
Laura and her team look for the killer of a beautiful Au Pair which sends them into the middle of a female escort ring. The precinct is in a frenzy when headquarters sends Detective Frankie Pulaski to investigate alleged indiscretions between Jake and Laura.moreless
Malcolm engineers Slade's escape to train Oliver and Thea in how to survive. Meanwhile, five years ago Amanda brings Oliver and Maseo to Starling City to recover the Omega bio weapon, and Oliver must decide whether to stop China White or stay with his friends and family who are falling apart without him.moreless
Laurel faces her greatest fear when Vertigo drugs her with the vertigo drug. Meanwhile, Oliver deals with the team's changes in his absence, and Chase makes his move against Thea.
Laura and the team investigate when a female impersonator is murdered. Laura and an old friend have a wild night out on the town.
Malcolm suggests an alliance to take down Brick, but Felicity objects. Meanwhile, Oliver leaves Tibet while in the past, Malcolm discovers who killed Rebecca and goes after him with murder in his heart.moreless
Brick abducts three city alderman and demands that the mayor remove the police from the Glades. With Oliver gone, Arsenal and Diggle are all that stands between the crime lord and control of the district. However, Laurel insists on helping them, carrying on her sister's legacy as Black Canary. In the past, Maseo reveals to Oliver that he will do anything to save his family.moreless
Oliver has disappeared for three days, but Felicity refuses to accept that he's dead. Meanwhile, Diggle and Arsenal go after a new crime lord: Brick. Meanwhile, Malcolm travels to Tibet, Ray continues testing his battle armor over Felicity's objections, and Laurel steps outside the law to fight crime.moreless
Laura and her team investigate arson and the death of a teenage boy. Jake and a former firefighting flame create sparks. Laura tries to put work aside and concentrate on the twins' Winter Carnival.moreless