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.
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
Barry travels to Starling City with Caitlin and Cisco, and ends up helping defend Lyla against an assassin determined to get his revenge on her despite Arrow and his friend's best efforts. In the past, Oliver is ordered to acquire information from a prison using whatever means necessary.moreless
Now that Arrow has crime in Starling City under control, Oliver tries to have a personal life. However, he and Roy are forced to forgo their personal plans when a new Count Vertigo begins dealing drugs, and a charming scientist makes a bid for Queen Consolidated. Meanwhile, Diggle has a new child, Quentin gets a promotion, and Laurel joins Arrow's crimefighting efforts.moreless
After a battle with Cyrus Gold, Oliver is poisoned and left for dead, and Felicity gives him an antidote that causes hallucinations of his past. Meanwhile, Brother Blood captures Roy, Barry continues assisting Felicity, and Lance loses someone when he tries to run surveillance on Cyrus.moreless
Police scientist Barry Allen travels to Starling City to investigate a seemingly impossible robbery from Queen Consolidated's Applied Science Division, and Felicity takes a liking to him... much to Oliver's dismay. Meanwhile, Sin asks Roy for help tracking down a missing friend, and Thea joins her boyfriend in the hunt, only for one of them to be injured.moreless
Members of New Directions perform the hits of The Beatles hits. Blaine and Kurt ponder their future together and Rachel's ambitions take her in an unexpected direction.
Jordan’s sister Elizabeth finds herself in trouble with an out-of-control Japanese prince, and Naomi steps in to take the blame and protect Elizabeth’s reputation. Silver receives a call from her doctor to come in after getting some test results, and Annie decides to get over Liam by traveling to Paris for a book tour. Meanwhile, Adrianna performs after Fall Out Boy at a concert, but the event ends in catastrophe.moreless
Jordan asks Naomi to organize a launch party for the hot new anonymous writer, known as Author X, which forces Annie to reveal that she is Author X. Silver worries that Adrianna is not comfortable with her dating Mark. Meanwhile, Dixon admits his true feelings to Michaela, ony to learn that she is interested in Navid.moreless
Naomi meets a young businessman named Jordan Welland and signs on to plan events for his media company. Annie, Silver, and Adrianna plan a girls' night out for Naomi to cheer her up after her divorce, but the evening ends with disastrous results. Dixon starts to develop feelings for Michaela, and after Liam discovers out that the Cronus brothers plan to set up Navid to take the fall for their cheating ring, Liam tries to befriend them to find evidence that will prove Navid's innocence.moreless
Naomi decides to re-open the Offshore with her half-brother Mark, serving as the restaurant's chef. Dixon books Michaela to perform at the Offshore's opening, which comes as a surprise to Silver. Annie feels confused when her old feelings for Liam return, and Navid agrees to escort Campbell's fiancé to an event but then discovers that Campbell is cheating on her.moreless
Liam shows some signs of post-traumatic stress disorder as he gets ready to testify against Ashley. Annie is upset with Naomi after she tracks down Annie and Dixon's half-brother, Mark, a chef who owns a gourmet food truck. Wolfgang Puck makes an appearance as a celebrity judge in a cooking competition. Silver becomes very controlling with her surrogate, Michaela, whom Dixon discovers possesses an impressive singing voice.moreless
Naomi and Max co-host a charity football game, which brings back some old feelings between them. Navid encourages Liam's new underground fighting hobby, and Adrianna intentionally sabotages a performance, hoping that Dixon will let her out of her contract. Annie's blog gets the attention of a publisher.moreless
Naomi and Max visit a marriage counselor to try to work out their problems, and Teddy finally tells Silver he'll give her the opportunity to have a baby, but his offer comes with some an unexpected twist. Navid takes advantage of Liam's celebrity status to help him get into an elite secret society, and Annie rushes to San Jose to reveal her true feeling to Riley before he undergoes experimental spinal surgery.moreless
Quinn returns to McKinley High for Thanksgiving, and helps prepare New Directions for Sectionals along with other fellow graduates. Finn tells the Glee club there going to be doing the Gangnam style dance. Kurt, Rachel and Brody along with Isabelle have a unique way of celebrating the traditional holiday.moreless
It's the week before Sectionals and evil in the form of the Warblers threatens the New Directions. The Glee club members get in touch with their inner superheros. Sam gives Blaine advice when he is presented with a proposition. Kitty and Marley team up, and rivals Jake and Ryder are challenged to find each other's kryptonite.moreless
As New Directions gears up for sectionals, Sebastian tries to undermine their win. Karofsky makes a terrible decision and Sue proves she really can do anything.
It's New Directions vs The Warblers as Glee celebrates the music of Michael Jackson in this tribute episode that sees the two groups face off en route to Regionals.
The CSI's may have a tough time finding out whom murdered a skydiver because the murderer is one of his one hundred and three children.
Sectionals arrive and the New Directions face the Trouble Tones and one other group. The New Directions are short handed and need to find members. Rachel and Finn try to get Sam to come back, and Tina defends Mike's dreams.moreless