Meanwhile, Laurel keeps her distance from Nyssa because she blames her sister's death on the League of Assassins; and Oliver and Roy work on repairing their respective relationships with Thea.Season 3, Episode 5November 5, 2014Oliver and Felicity try to contain the destruction caused by a cyber attack that rocks Starling City.
Season 3, Episode 8December 3, 2014A crossover event that began on "The Flash" concludes with Oliver teaming with the Flash to stop a boomerang-wielding killer who plants five bombs in the city that are set to explode at the same time.
Season 3, Episode 9December 10, 2014Nyssa returns and tells Oliver that her father, Ra's al Ghul, has given him 48 hours to find Sara's killer or the League of Assassins will start killing the citizens of Starling City.
Meanwhile, Laurel is stunned when her mother visits at Christmas; and Ray tries to make amends with Felicity.
Season 3, Episode 10January 21, 2015The team try to protect the city in the Arrow's absence and fear the worst may have befallen their friend.
Season 3, Episode 15February 25, 2015Merlyn is captured by Ra's al Ghul and taken to Nanda Parbat.
Meanwhile, Ray becomes 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.
Season 3, Episode 17March 25, 2015Diggle and Lyla get married, but Deadshot interrupts their honeymoon and tells them the Suicide Squad has been given a new mission. Meanwhile, Oliver learns about Ray's new Atom costume and the two have a heated exchange; and Felicity and Ray hit a rough patch.
Season 3, Episode 18April 1, 2015Ray is critically injured during an attack on the mayor's office.
In a flashback, Oliver is assigned his first kill and the target is his best friend, Tommy.
Season 3, Episode 4October 29, 2014Oliver and Nyssa join forces and go after the Dark Archer in order to bring Sara's killer to justice.
In flashbacks, Maseo asks Tatsu to help jog Oliver's memory so he can remember where an informant for China White stashed key information; and Roy shares a secret with Felicity.