Original air date: 10/12/2017 Runtime: 42:23 min. Following the devastating explosion on Lian Yu that left his team in jeopardy, Oliver returns home to begin a new chapter in his life where he will confront a challenge unlike any he’s ever faced: fatherhood. The aftermath of Adrian Chase’s maniacal scheme throughout Season Five reminded Oliver how strongly he values family, both biological and chosen. With support from his team, Oliver is determined to embrace his new role as father to William (recurring guest star JACK MOORE) while still serving and protecting his city as the Mayor and the Green Arrow. But when unexpected enemies from his past return to Star City and threaten his role as protector on three fronts, Oliver is forced to rethink his relationship with each member of his “family”.
Original air date: 10/26/2017 Runtime: 41:55 min. A rogue black ops team led by Onyx (guest star CHASTITY DOTSON) breaks into Kord Industries and steals something lethal. Meanwhile, Oliver’s still struggling to connect with William, so he reaches out to a surprising source for help.
Original air date: 11/09/2017 Runtime: 42:28 min. Slade (recurring guest star MANU BENNETT) returns and asks Oliver for help in tracking down his son. When they learn Joe (guest star WILLIAM FRANKLYN-MILLER) has been taken hostage by mercenaries, their mission to save him gets complicated by a terrible revelation that could shatter Slade's hopes of reunion forever. Meanwhile, Vigilante reappears in Star City.
Original air date: 11/16/2017 Runtime: 42:23 min. As Slade continues to uncover clues about his son’s last few years, Oliver makes a big decision. Meanwhile, the Green Arrow leads the team into battle against “The Dragon,” (guest star KIRK ACEVEDO), a villain who is stealing valuable tech in Star City.
Original air date: 11/27/2017 Runtime: 42:24 min. The epic four-way crossover with Arrow, Supergirl, The Flash and DC’s Legends of Tomorrow continues! Barry Allen (guest star GRANT GUSTIN) and Iris West’s (guest star CANDICE PATTON) wedding brings the gang together – but things go awry when villains from Earth-X attack the ceremony. All of the Super Heroes band together with help from their super friends like Citizen Cold (guest star WENTWORTH MILLER), The Ray (guest star RUSSELL TOVEY), Felicity Smoak and Alex Danvers (guest star CHYLER LEIGH) to take on their most formidable villains yet. Earth’s mightiest heroes – The Green Arrow, Supergirl (guest star MELISSA BENOIST), The Flash and White Canary (guest star CAITY LOTZ) – lead their teams into battle to save the world.
Original air date: 12/07/2017 Runtime: 42:22 min. Quentin Lance is kidnaped by Black Siren and Cayden James (guest star MICHAEL EMERSON), who are looking to trade Lance’s life for a weapon of mass destruction. Oliver and Team Green Arrow must figure out a way to save Lance while still keeping the city safe.
Original air date: 01/18/2018 Runtime: 42:20 min. Despite losing half his team, Oliver remains confident that he, Felicity and Diggle can stop Cayden James and Black Siren. However, when he discovers one of Cayden’s secrets, he decides to team up with an unlikely ally. Meanwhile, Dinah spends time with Vince (guest star JOHANN URB).
Original air date: 01/25/2018 Runtime: 41:41 min. Cayden James ups the ante by launching his plan to take control of every aspect of the city. Despite the scope of Cayden’s plan, Oliver is determined to foil it with just the Original Team Arrow – and without the aid of Rene, Dinah, or Curtis. But things get complicated when William is endangered as a result of Cayden’s handiwork.
Original air date: 02/08/2018 Runtime: 42:22 min. Cayden James discovers a secret about the Green Arrow that pushes him over the edge. Knowing everyone and everything he loves is in danger, Oliver must decide if he can do this alone or if he needs to turn to his old teammates for help. Meanwhile, William starts to demand more of Oliver’s time.
Original air date: 03/08/2018 Runtime: 42:24 min. While Black Siren makes a shocking decision, Oliver and Thea are stunned to hear that Roy Harper (former series regular COLTON HAYNES) is back in Star City. When they discover the circumstances of his return, however, they realize that he’s in trouble and jump in to save him.
Original air date: 03/29/2018 Runtime: 42:21 min. Nyssa Al Ghul (recurring guest star KATRINA LAW) returns to Star City to warn Thea that a group of renegade League of Assassins members are planning to attack her. This group, led by Athena (guest star KYRA ZAGORSKY), is intent on finding a mysterious box that Malcolm left behind and will stop at nothing to get it. Nyssa helps Oliver come to a life-changing realization.
Original air date: 04/12/2018 Runtime: 42:03 min. In his darkest place yet, Oliver wonders if he has failed at everything – being a father, a mayor and a hero. His frustration rising, Oliver lashes out at Felicity and William (recurring guest star JACK MOORE), when a surprising visit from an old friend has Oliver questioning his next move.
Original air date: 04/19/2018 Runtime: 42:20 min. Looking to expand his empire, Diaz and Laurel meet with The Quadrant, a coalition of mafia families who run national organized crime. Meanwhile, after Oliver’s recent decision, Felicity and Curtis double their efforts on building Helix Dynamics.