Rip tries to weaken Vandal Savage by going after his financial assets. Rip and Sara infiltrate Savage's bank but are discovered by his men. Meanwhile, Snart and Rory talk Jax into taking the jump ship back to Central City so they can steal a valuable emerald; and Professor Stein guides Ray on a dangerous mission.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
Barry teams up with Wells to find a way to close the breaches, but they are distracted by a meta-human nicknamed Tar Pit who can transform into liquid asphalt. Meanwhile, Iris becomes concerned for Wally's safety when she learns he is drag racing.moreless
A twisted version of Supergirl, one who's the mirror image of the Kryptonian hero, sets out to destroy her National City counterpart. Meanwhile, Kara grows closer to Cat's son Adam.
Team Arrow takes on Shadowspire, an elite black-ops military team gone rogue. When Diggle learns that Andy is connected to them, he turns to his brother for help. Meanwhile, Felicity deals with her first day back on the job as the computer hack for the team.moreless
Cisco works with Harry to stabilize his "vibe" power, and gets a vision of Eobard Thawne killing Dr. McGee. The team soon realizes that Reverse-Flash is back... from a time period before he killed Barry's mother. Meanwhile, Iris says goodbye to her dying mother and suggests that Wally do the same, and Patty prepares to leave Central City.moreless
Hank is confronted by his painful past when a member of the alien race that wiped out his people kidnaps Senator Miranda Crane. Meanwhile, Cat's estranged son arrives in National City.
While Oliver and the team hunt down Damien, Lyla gives Diggle some advice on how to deal with Andy. In the past, Reiter makes a deal with Oliver.
The Flash battles a meta-human whose powers are the opposite of the hero's... and may prove too much for him to handle. Meanwhile, Barry considers whether to tell Patty the truth about his secret identity, and Wally is less than thrilled to have a new family.moreless
Kara does her best to support Winn and keep him safe when his father, the evil Toyman, breaks out of prison; Cat offers Lucy a job at CatCo; and Alex asks Hank to use his powers to help uncover Maxwell Lord's plans.moreless
Supergirl finds herself in a tense standoff with Non as she tries to rescue Hank from his clutches; and Kara is confronted by Cat about being National City's very own caped crusader.
Kara faces off with Astra after her aunt challenges Kara's beliefs about her mother; and Cat is threatened with being removed as the CEO of CatCo after a hacker exposes her private and damaging emails.moreless
After Damien launches an attack on Oliver and his people at the bay, Oliver retaliates by exposing Damien and HIVE to the public. However, Damien has another trick up his sleeve. Meanwhile, Felicity finds Oliver's engagement ring, and Diggle tries to get the truth from an imprisoned Andy.moreless
Weather Wizard plans to get revenge on Flash and recruits Captain Cold and Trickster to help him. Meanwhile, Harry considers his deal with Zoom, Joe and Iris meet Wally, and Patty meets the man who killed her father.moreless
An earthquake strikes National City, forcing Supergirl, James, and Winn and Cat to draw on reserves of inner strength to deal with the resulting crises. Meanwhile, Alex and Hank are trapped in the DEO base with Jemm, one of the Fort Rozz prisoners.moreless
Teams Arrow and Flash go to ground to come up with a plan to stop Vandal. Malcolm arranges a meeting with the immortal villain, but it doesn't go well. While the teams try to come up with a plan, Carter tries to reawaken Kendra's memories of her past lives.moreless
A mysterious immortal named Vandal Savage comes hunting for Kendra, and Barry and Cisco take her to Star City seeking Oliver's help. Meanwhile, Caitlin and Harrison create a speed enhancer, Velocity-6, but they need Jay to test it and he refuses.moreless
Stress and anger get the better of Kara when she goes too far during a training exercise with Red Tornado, a military cyborg commissioned by Lucy Lane's father, General Sam Lane. Elsewhere, Cat's tough exterior is shaken by a visit from her judgmental mother, Katherine; at the same time, Alex enlists Winn to investigate her father's mysterious death.moreless
Kara is pulled in two directions when babysitting Cat's son, at the same time, National City is hit by a series of bombings. Meanwhile, James feels conflicted when his ex-girlfriend Lucy Lane tries to rekindle their relationship.moreless
Diggle discovers that his brother is one of Damien's Ghosts, and Oliver insists on trying to rescue him. Meanwhile, Damien offers Oliver a deal, and Ray contemplates his future now that he's back from the dead.moreless
Barry's confidence is crushed after Zoom cripples him, and Iris calls Henry in to help his son. Meanwhile, Grodd launches a new plan to gain others like himself, and Caitlin convinces Harrison to help them.moreless
Kara's Thanksgiving may be ruined thanks to a tense visit from her foster mother, who seems to disapprove of her daughter's superhero role. There's also the matter of a volatile CatCo employee being transformed into the villainous Livewire to contend with over the holidays.moreless
Team Arrow launches an attempt to rescue a miniaturized Ray from Damien's stronghold. Meanwhile, Felicity begins to wonder if she's losing herself in her relationship with Oliver, and Donna arrives in Star City to pay her daughter a visit.moreless
Barry tries to lure Zoom into a trap despite Caitllin's objections, and Joe wonders if his foster son has an ulterior motive. Meanwhile, Dr. Light escapes from her prison and the team turns to her Earth-1 counterpart--Linda--for help.moreless
One of Superman's enemies is gunning for Supergirl, whose powers are tested when the formidable Reactron arrives in National City; at the same time, Cat makes plans to run an exposé on the young hero.moreless
When Sara starts killing people, Oliver realizes that her body is without a soul and calls in a mystical friend--John Constantine--to reunite Sara's two halves. Meanwhile, Damian sends Quentin on a mission, and the police captain discovers information about Diggle's brother Andy.moreless
The Flash and his team battle Doctor Light, the newest breacher to come to Earth-1. This time, the team has Harrison Wells to help them... the Harrison from Earth-2. Meanwhile, Barry finally asks Patty on a date, and Cisco asks a new barista for her number.moreless
Kara's confidence as a superhero is shaky at first, and with good reason. But then a threat to National City forces her to cast her doubts aside in order to capture an escapee from the Kryptonian prison Fort Rozz. Elsewhere, Cat pressures James to use his connection to Superman to land her an interview with his cousin.moreless
Laurel returns Sara to Star City to reunite with Quentin, but neither one of them reacts as she hoped. Meanwhile, Green Arrow and his team go after crooked cops who are ripping off drug dealers for personal profit, and Oliver prepares for his mayoral candidacy.moreless
The team tries to find a substitute for Ronnie before Martin dies due to a lack of molecular stability. Meanwhile, Francine startles Joe with unexpected news, and Barry hesitates to become romantically involved with Patty.moreless