With Lance still targeting the Arrow, Felicity insists that Oliver keep a low profile; a metahuman who uses blasts of energy and plasma to kill people terrorizes the city, forcing Ray and Oliver to team up.

Ray is seriously injured when the mayor's office is attacked; Felicity's mother visits to offer support; Oliver and the team's pursuit of the person responsible becomes complicated when Capt. Lance is kidnapped by Ra's al Ghul.

Diggle and Lyla's honeymoon is interrupted by the Suicide Squad and a new mission; Oliver and Ray have a heated confrontation about the Atom costume, leading to a rough patch between Ray and Felicity.

Oliver learns a new villain and his crew have been terrorizing Starling City; Nyssa and Laurel bond over their issues; Lance shuts out the Arrow and Laurel.

Ra's al Ghul captures Malcolm and takes him to Nanda Parbat; Ray obsesses over finishing his Atom suit, but Felicity tries to get him out of the lab to prevent him from going down the wrong path.

Malcolm places Oliver and Thea in a dangerous situation; a flashback reveals a time when Oliver and Maseo returned to Starling City.

Oliver struggles to adjust to the changes that have taken place within Team Arrow; Laurel ignores Oliver and pursues Vertigo -- who injects her with the drug; Thea receives a surprise visitor.

Still without Oliver, the team is forced to consider Malcolm's offer; more details of Malcolm's life are revealed.

Diggle and Arsenal confront Laurel about her dangerous work as the Black Canary; Felicity sees a new side of Ray as he helps Lance fight a villain who has kidnapped the city's Aldermen.

As Diggle, Felicity and Roy start to fear the worst after Oliver's disappearance, Merlyn pays them a surprise visit; Ray experiments with part of his new suit; Laurel takes on the role of the Black Canary.

Laurel is surprised when her father shows up with a with a special Christmas gift -- her mother, Dinah; Ray tries to make things right with Felicity; Oliver meets with Ra's al Ghul.

As Oliver, Arsenal and Diggle pursue a killer named Digger Harkness, they encounter an ARGUS team; Oliver and the Flash team up to try to stop Harkness.

A woman becomes obsessed with Arrow and begins killing people to get his attention; Ray asks Felicity to accompany him to dinner with important clients; Thea auditions new DJs.

Ted Grant becomes the primary suspect when a body is found in the Wildcat gym; Roy divulges a secret to Felicity.

Oliver learns that Malcolm Merlyn is alive -- and thinks he was responsible for Sara's death; Laurel avoids Nyssa, believing that Sara's association with the League of Assassins led to her demise.

When Felicity determines that Thea is in Corto Maltese, Oliver intends to bring her back home; Diggle is double-crossed; Laurel and Ted Grant meet.

Another archer comes to town and targets businessmen; Roy is forced to tell Oliver why Thea left town; Laurel considers sharing a secret with Lance.

With crime at an all-time low, Oliver lets his guard down and is taken by surprise by a new villain; Oliver and Roy take on the Count; Diggle becomes a father; Lance gets a promotion; Laurel joins the inner circle.

Oliver is forced to reconsider what he is willing to do to stop Slade from killing someone else close to him; Diggle goes after Amanda.

As Slade's soldiers target the city, Oliver rallies his team; Felicity receives game-changing news from S.T.A.R. Labs; Thea and her father come face to face.

Diggle and Felicity go to extremes to keep Oliver from surrendering to Slade; Thea thinks about leaving town; Laurel goes after Sebastian Blood again.

At 12 years old, Kara Zor-El escapes doom on planet Krypton to find protection on Earth with the Danver family, where she grows up in the shadow of her foster sister, Alex, and learns to hide the extraordinary powers she shares with her cousin, Superman. Now an adult living in National City and working for media mogul Cat Grant, Kara finds her days of keeping her abilities a secret are over when super-secret agency head Hank Henshaw enlists her to help protect the city's citizens from threats. Finally coming into her own, Kara must juggle her new responsibilities with her very human relationships.

"Arrow" and "The Flash" have some new superhero company in the CW's lineup with the addition of "DC's Legends of Tomorrow." After seeing what doom the future holds, time-traveling rogue Rip Hunter realizes heroes alone are not enough to prevent the impending catastrophe that threatens not only the planet, but all of time itself. Tasked with recruiting both heroes and villains, Rip brings together a ragtag team of divergent talents, which includes the likes of Sara Lance, Ray Palmer, and Heat Wave.

Three years after Batman mysteriously disappeared, Gotham is a city in despair, and it's under the watch of Jacob Kane and his military-grade Crows Private Security, which now protects the city with omnipresent firepower and militia. When the Alice in Wonderland gang targets the firm, Kane's daughter Kate returns home, deciding that if she wants to help her family and her city, she'll have to become the one thing her father loathes -- a dark knight vigilante. With the help of her stepsister Mary and the crafty Luke Fox, the son of Wayne Enterprises' tech guru Lucius Fox, Kate Kane continues the legacy of her missing cousin, Bruce Wayne. Armed with a passion for social justice and a flair for speaking her mind, Kate soars through the shadowed streets of Gotham as Batwoman.