Oliver thinks he can finally balance being both the Arrow and Oliver Queen and asks Felicity out on a date. However, when a new villain emerges, who has claimed the name Vertigo from the recently deceased Count, Oliver is caught off-guard and someone close to him is hurt. Oliver and a newly suited up Roy take on the Count. Meanwhile, Diggle becomes a father, Quentin is promoted to Captain, Laurel joins Team Arrow. Oliver fights to regain his company, Queen Consolidated, but comes up against a very worthy opponent - the charming Ray Palmer.

Barry Allen was 11 years old when his mother was killed in a bizarre and terrifying incident and his father was falsely convicted of the murder. With his life changed forever by the tragedy, Barry was taken in and raised by Detective Joe West, the father of Barry's best friend, Iris. When the partical acceleration causes a freak storm, many lives are lost and Barry is struck by lightning. After nine months in a coma, Barry awakens to find the accident has given him the power of super speed. 

Quentin calls The Arrow when another archer appears in town and starts skewering businessmen. Diggle uses A.R.G.U.S. to find the archer’s identity. The team hits a rough patch with the mission and gets help from a surprising source - Laurel. Meanwhile, Oliver begins to worry that he hasn’t heard from Thea. Ray Palmer pursues Felicity. In the flashback, Maseo tells Oliver that Amanda Waller has ordered his first kill. Despite her promise to her sister, Laurel debates sharing a secret about Sara with Quentin.

Barry escorts Iris to a university gathering honoring scientist Simon Stagg. When six gunmen storm the event, Barry changes into The Flash and tries to stop them. While he does save a man's life, he passes out before he can capture the robbers, which frustrates him. As Dr. Harrison, Caitlin and Cisco scramble to find out what's wrong with Barry, Joe comes down hard on Barry for taking the law into his own hands and risking his life. Barry realizes that it wasn't six gunmen but a meta-human named Danton Black, who can make multiples of himself. 

As Barry and the team at S.T.A.R. Labs work to capture Kyle Nimbus, a.k.a. The Mist, a dangerous new meta-human with toxic gas powers, they revisit the painful night the particle accelerator exploded and killed Caitlin's fiancé, Ronnie. Meanwhile, Joe decides to finally visit Henry in jail after all these years, but things take a dangerous turn when Kyle shows up looking to punish Joe for arresting him years ago. Meanwhile, Iris and Eddie continue to hide their relationship from Joe.

Oliver decides it’s time for Thea to come back to Starling City, so he packs for Corto Maltese, where Felicity has traced Thea’s whereabouts. Lyla asks Diggle to go with Oliver because one of her field operatives, Mark Shaw, has gone dark in Corto Maltese and she’d like him to look into it. Feeling responsible for Thea's departure, Roy joins Oliver and Diggle on their journey. Shaw double-crosses Diggle, putting numerous A.R.G.U.S. agents, including Lyla, at risk. Meanwhile, Laurel meets Ted Grant, and Felicity adjusts to her new job.

The Flash stops a robbery but the culprits get away after shooting a guard, and The Flash chooses to save the man instead of following the criminals. Joe shows Barry a book of suspects and Barry identifies Leonard Snart as the leader of the group. Snart revises his plan to steal the Kahndaq Dynasty Diamond and gets a boost when he gets his hands on a stolen "cold gun", which could kill The Flash. Meanwhile, Iris is getting the silent treatment from Joe because of her relationship with Eddie. Finally, The Flash and Captain Cold have an epic confrontation.

A furious Nyssa confronts Oliver about Sara. When Oliver learns Malcolm Merlyn is alive, he suspects Merlyn killed Sara. Oliver and Nyssa join forces and go after the Dark Archer, intent on bringing Sara's killer to justice. Laurel keeps her distance from Nyssa, as she blames her sister's death on her involvement with the League of Assassins. Meanwhile, Oliver and Roy work on repairing their respective relationships with Thea, who has returned home. Nyssa discusses Oliver with her father, Ra's al Ghul.

When a cyber attack brings Starling City to its knees, Oliver and Felicity are pushed to their limits to contain the destruction. Life gets even more complicated for Felicity when her mother, Donna, stops by for a surprise visit. Meanwhile, Ted Grant questions Laurel’s motives, and Thea buys an apartment with Malcolm’s "estate" money, which infuriates Oliver.

After a body is found strung up in the Wildcat gym, Ted Grant becomes the main suspect. Oliver and Laurel argue over Ted's innocence. Meanwhile, in flashbacks, when Maseo needs Oliver to remember where an informant for China White stashed key information, he asks Tatsu to help jog Oliver's memory. Roy shares a secret with Felicity.

After a bomb goes off downtown, the army, led by General Eiling, rolls in and takes over the case, much to Joe's surprise. Suspicious, Joe tells Barry that he and his friends at S.T.A.R. Labs should look into the army's involvement. Wells informs the team that Eiling was experimenting on his men to turn them into super soldiers. Cisco confirms one of Eiling's soldiers, Bette Sans Souci, was at the bomb site. The Flash tracks her down and realizes that she's not setting off the bombs, she is a meta-human who can blow things up just by touching them. 

The Flash faces a new meta-human named Tony, who can turn himself into girded steel at will. While Dr. Wells and Caitlin are concerned about Barry's safety, Cisco comes up with a plan to take Tony down. Meanwhile, Iris's blog on The Flash gets her into trouble, and Eddie witnesses Tony's abilities firsthand and begins to ask questions that Joe doesn't want answered. Joe asks Dr. Wells to help him solve Nora Allen's murder.

Oliver must stop an Arrow-obsessed serial killer, Carrie Cutter, who is convinced that The Arrow is her one true love and will stop at nothing to get his attention. Unfortunately, her way of getting his attention is to kill people. Meanwhile, Ray asks Felicity to be his date for a work dinner with important clients. Thea auditions new DJs for Verdant and meets Chase, a brash DJ with whom she immediately clashes.

The Flash goes up against Farooq aka Blackout, a meta-human who can harness electricity. During their battle, Farooq zaps The Flash and siphons all his electricity, leaving The Flash without his speed. Dr. Wells, Caitlin and Cisco work to reverse the effects on Barry, but their efforts are disrupted when Farooq comes banging on S.T.A.R. Labs' doors in search of Wells, who he blames for his accident. Meanwhile, Tockman manages a coup inside the Central City police department and takes several people hostage, including Joe and Iris. 

Barry is thrilled when Oliver, Felicity and Diggle come to Central City to investigate a case involving a deadly boomerang. Barry asks Oliver if he'd like to help him stop Roy Bivolo, the meta-human Barry is currently tracking. Bivolo causes people to lose control of their emotions and has been using that skill to rob banks. Unfortunately, the superhero partnership doesn't go as smoothly as Barry expected. Bivolo infects Barry and sets him on a rage rampage, everyone is in danger, and the only one who can stop him is the Arrow. 

Oliver, Arsenal and Diggle track down the location of a boomerang-wielding killer named Digger Harkness. The Arrow joins the fight and gets help from an old friend – The Flash. Harkness manages to get away and Oliver teams up with Barry again to find him before he can get to Lyla. When Harkness plants five bombs in the city that are timed to explode at the same time, both teams must come together to save the city.

Barry finds himself face-to-face with his nemesis, the man in the yellow suit, a.k.a. Reverse Flash, who killed his mother. Barry is frustrated when the Reverse Flash escapes, but Dr. Wells and Cisco come up with a plan to trap him. All they need is bait, so they turn to Dr. Tina McGee (guest star Amanda Pays) from Mercury Labs to help. Meanwhile, it's Christmas at The West household and Iris is in full holiday cheer. Eddie gives her a surprising gift but also leaves her with a question that could change her life. Caitlin finds Ronnie.

Leonard Snart AKA Captain Cold returns to Central City with a new hotheaded partner in tow – Mick Rory AKA Heat Wave. The duo plan to steal a multimillion-dollar painting, but Cold has another agenda while in town – to set a trap for The Flash. Snart and Mick kidnap someone close to The Flash and threaten to kill them unless The Flash shows up for a battle of fire and ice. Iris deals with the aftermath of Barry's confession, and Cisco makes the CCPD a new shield.

Nyssa returns to Starling City and tells Oliver that her father, Ra's al Ghul has given Oliver 48 hours to find Sara's killer or the League of Assassins will start killing the citizens of Starling City. Laurel is stunned when her father delivers a very special Christmas gift – her mother, Dinah. Meanwhile, Ray tries to make amends with Felicity and Oliver sets a meeting with Ra's al Ghul.

In the aftermath of Oliver’s fight with Ra's al Ghul, Diggle and Roy Harper continue to protect the city in The Arrow's absence. However, after 3 days without hearing from Oliver, they begin to fear the worst may have happened to their friend. Felicity refuses to believe that Oliver could be dead until Malcolm pays the team a surprise visit. Thea suspects there is something more behind Oliver’s disappearance and asks Malcolm for a favor. Meanwhile, Ray tests a part of his new suit and Laurel takes up the mantle of the Black Canary.

Dr. Wells' former protégée, Hartley Rathaway, returns to seek revenge on his mentor after being affected by the particle accelerator explosion. Now able to manipulate sound waves, the brilliant Rathaway is a dangerous threat to both Wells and The Flash. Meanwhile, Iris is thrilled when she's hired by the Central City Picture News as their newest cub reporter. Joe asks Eddie for a favor but asks him to keep it a secret from Barry.

Caitlin decides that she and Barry need to move on from Ronnie and Iris and find new loves so she takes him for a night out at the local karaoke bar. Caitlin doesn't have any luck making a love connection but Barry meets Linda Park and asks her out on a date. When Barry tells Iris he has a date, Iris is surprised by her reaction. Meanwhile, Cisco considers Hartley's dangerous offer and the team searches for Shawna, a meta-human with teleportation powers, who just busted her boyfriend Clay out of Iron Heights. 

Arsenal and Diggle confront Laurel about trying to step into her sister's shoes and warn her to stop before she gets herself killed. However, when Brick kidnaps the city's Aldermen and threatens to kill them all unless the police evacuate The Glades, it's all suits on deck. Meanwhile, Ray steps in to help Lance and the police force fight Brick, showing Felicity a new side of her boss. Malcolm tells Thea that Ra's al Ghul is after him and his family and they must leave town immediately.

Still operating without Oliver and determined to stop Brick, Team Arrow is forced to weigh Malcolm’s offer to help shut Brick down as Malcolm has a personal vendetta to settle with the thug. Roy and Laurel point out that the team could use some help to save the innocents of The Glades, but Felicity is adamantly against it. They look to Diggle to make the final decision. Meanwhile, the flashbacks chronicle Malcolm’s descent from kind-hearted father and husband to cold-blooded killer after the murder of his wife.

After Ronnie attacks a physicist, Barry and the team realize they need to go after Caitlin's fiancé who is now a dangerous meta-human. They deduce the best way to track Ronnie is to find Dr. Martin Stein who was working on a project called F.I.R.E.S.T.O.R.M.. Barry struggles to balance his duties as The Flash and his relationship with Linda Park, and Joe enlists Cisco's help to reinvestigate the murder of Nora Allen. General Eiling returns to Central City.

After the nuclear explosion separates Ronnie Raymond and Dr. Stein, Barry and the team believe both men are safe. Caitlin is thrilled to have her fiancé back and prepares to resume their life together while Dr. Stein returns to his wife. However, when General Eiling targets Firestorm, Ronnie and Dr. Stein must decide if they are safer together or apart. Meanwhile, Mason Bridge tells Iris West that there is something secretive going on at S.T.A.R. Labs and Dr. Stein gives Barry some important information about time travel.

Oliver is thrown by the changes within Team Arrow. He's used to calling the shots but sees that the team has evolved in his absence and tensions quickly escalate in the lair. Oliver is furious that Laurel has been going out as the Black Canary and tells her to stop risking her life. Laurel's biggest fears revolve around her sister Sara so the Vertigo causes her to hallucinate an epic fight between Canary and Black Canary. Meanwhile, Chase surprises Thea, and Roy warns Thea to stay away from Malcolm.

Malcolm puts Oliver and Thea in a dangerous situation that lands them on Lian Yu with Oliver’s former enemy, Deathstroke. A flashback reveals when Oliver and Maseo returned to Starling City to retrieve the Omega bio weapon, and despite being under strict orders from Amanda Waller not to reveal himself to anyone, Oliver looks in on his family, Laurel and Tommy.

EPISODE 1: Mari, an orphan young woman is chased through the city exactly 3 days after she was bailed out of jail by her foster Father.

EPISODE 2: Mari learns from a college professor that her necklace might be more than she thought, but the professor might work a very different angle.

EPISODE 3: Mari attempts to explain to Chuck the mysterious powers that she has gained through the use of the Anansi Totem, but he thinks her idea is crazy.

EPISODE 4: Mari uses her new found powers to evade the efforts of Arrow and Flash who are attempting to subdue and question her about the events at S.T.A.R. laboratories.

EPISODE 5: As Mari and Kuasa engage in struggle for control of the Anansi Totem, they learn that it is bound to her and cannot be removed.

EPISODE 6: Mari comes to grips with her new found powers and embraces the animals who have surrounded her and provided protection. Afterwards she begins to provide that same protection in the city of Detroit.

Malcolm is captured by Ra's al Ghul and taken to Nanda Parbat. Because of his love for Thea, Oliver considers saving Merlyn. Ray is 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.

Still weighed down by his last meeting with Ra's al Ghul, Oliver returns home to find a new villain and his crew have started terrorizing Starling City – Michael Amar AKA Murmur, a man whose mouth has been sewn shut. Meanwhile, Laurel and Nyssa bond over their issues with their fathers and Nyssa makes Laurel an offer. Thea is forced to come to terms with her father after Oliver brings Malcolm to the loft to recover, and Lance shuts out both Laurel and the Arrow.

Mark Mardon aka The Weather Wizard appears in Central City intent on avenging his brother Clyde's death, and sets his sights on Joe, who shot Clyde. Barry warns Joe not to go after a meta-human alone but Joe doesn't listen and ends up in grave danger. Meanwhile, Cisco looks into the night the team captured the Reverse Flash and realizes something doesn't add up and begins to wonder whether Joe was right about Dr. Wells. Barry and Linda Park end up on an awkward double date with Eddie and Iris.

The Flash learns that Captain Cold and Heat Wave have returned to Central City. This time Snart has brought along his baby sister Lisa to help wreak havoc on the city.

A copycat killer who goes by the name "The Trickster" starts setting off bombs in Central City. In order to stop the villain, Barry and Joe meet with the original Trickster, a criminal mastermind named James Jesse, who has been imprisoned for 20 years. Things quickly go from bad to worse when the Tricksters unite and take Henry Allen prisoner. Meanwhile, Iris asks Eddie for help with a case, and flashbacks show how Harrison Wells came up with the idea for the particle accelerator.

Barry is surprised when Felicity Smoak arrives from Starling City along with her boyfriend, Ray Palmer, who flies in as the Atom. They've come to visit S.T.A.R. Labs as Ray needs help with his suit. Their timing turns out to be fortuitous because it's all hands on deck after a meta human named Brie Larvan unleashes hundreds of robotic bees to attack and kill her former co-workers, including Dr. Tina McGee. A group dinner with Barry, Felicity, Ray, Iris and Eddie turns into a disaster.

It's celebration time as Diggle and Lyla get married. However, Deadshot interrupts their honeymoon and tells them the Suicide Squad has been given a new mission – rescue United States Senator Joseph Cray from a hostage situation in the Republic of Kasnia. Amanda Waller breaks down the mission and introduces them to the newest member of the Suicide Squad, Cupid. Meanwhile, Oliver learns about Ray's new Atom costume and the two have a heated stand-off. Felicity and Ray hit a rough patch.

During an attack on the mayor's office, Ray is critically injured. Felicity is pleasantly surprised when her mother, Donna Smoak, shows up at the hospital to offer her support. With the SCPD out in full force looking for the assailant, Oliver and his team work hard to stay one step ahead of the police to find the man responsible. However, things come to a head when Ra's al Ghul kidnaps Captain Lance.

Lance continues his mission to take down the Arrow so Felicity orders Oliver to keep a low profile. However, when a meta-human named Jake Simmons, who kills people with blasts of energy and plasma, starts terrorizing Starling City, Oliver is forced to ask Ray for help. The unlikely duo is forced to team up to save the city.

Ra's al Ghul finally makes Oliver an offer he can't refuse. The team joins Oliver on his journey to Nanda Parbat where a heartbroken Felicity decides to take matters into her own hands.

Joe and Cisco head to Starling City to continue their investigation of Dr. Wells. While in town, the duo enlists the help of Captain Lance, and Cisco meets the Black Canary, who asks him for a favor. Meanwhile, back in Central City, Barry races to catch a meta-human named Hannibal Bates who can transform himself into every person he touches – which includes Eddie, Iris, Caitlin and even The Flash.

Barry, Caitlin, Cisco and Joe set a trap for Wells. Cisco uses himself as prey which puts him in grave danger. Meanwhile, Eddie makes a decision regarding Iris, which leaves Joe a bit unsettled.

Barry must deal with the Reverse-Flash and his latest threat to a member of the group. To make matter worse, Dr. Wells unleashes Grodd on the city in order to distract Barry and the team. Joe, Barry and Cisco head down into the sewers to catch Grodd but the gorilla quickly gets the upper hand after he kidnaps Joe. Iris and Barry have a heart to heart talk.

Oliver goes through a rigorous transformation. The League of Assassins sets their sites on Nyssa, who is back in Starling City training Laurel. When Nyssa realizes they are coming, she arms up to face them alone but Laurel asks Felicity and Diggle to help protect her new friend.

Oliver/Al Sah-him finishes his training and is left with two final tasks to become the next Ra’s al Ghul. Ra's threatens Nyssa and delivers some shocking news. Meanwhile, Malcolm makes a surprising offer to Team Arrow and Thea goes to see Roy.

As Wells once again gets the upper hand on the S.T.A.R. Labs team, Barry realizes he needs to make a big move and reaches out to an old foe, Captain Cold, for help. Joe and Caitlin warn Barry that Cold can't be trusted. True to form, Cold has his own agenda that involves the meta-humans trapped in the containment cells. As things seem to be going from bad to worse, The Flash gets reinforcements – Arrow and Firestorm.

Wells presents Barry with a life-changing choice. Dr. Martin Stein and Ronnie Raymond return to help the S.T.A.R. Labs team with this final fight.

Everyone's lives are in danger as Ra's al Ghul puts forth his final plan. Oliver/Al Sah-him must decide if he's strong enough to take on this new role and what it will mean for everyone on Team Arrow, and his soul.

Based on the wildly popular comic book series "Hellblazer" from DC Comics, seasoned demon hunter and master of the occult John Constantine is armed with a ferocious knowledge of the dark arts and a wickedly naughty wit. He fights the good fight - or at least he did. With his soul already damned to hell, he's decided to abandon his campaign against evil until a series of events thrusts him back into the fray when an old friend's daughter becomes the target of supernatural forces.

Deep in the mountains of Western Pennsylvania, John is a small mining community's only defense against an ancient Welsh spirit. In the course of protecting these isolated innocents, John finds a vital new ally in a mysterious young woman named Zed.

John and Zed engage in a dangerous confrontation to save a woman and her family from sinister forces. John's efforts force him to confront the darkness in his own life – while also coming face to face with a new powerful adversary in Papa Midnite.

When Constantine's old friend Gary Lester accidentally releases a powerful demon in Atlanta, John is forced to determine exactly what he is prepared to sacrifice in his battle with the underworld.

In New Orleans, Constantine's unusual knowledge of a string of crimes gets him into trouble with Detective Jim Corrigan. He must form an unholy alliance with Papa Midnite when a voodoo ritual to help people communicate with their dead loved ones takes a deadly turn.

When a young boy is taken over by a malevolent spirit, John must put aside his misgivings over exorcising a child and convince the parents that their boy is not all that he seems.

While in art class, Zed has a bizarre vision of snakes that lead her and John to a small town where a preacher has mysteriously gained the ability to heal his congregation.

A call from Anne Marie, a member of the fateful Newcastle crew, sends John and Chas to Mexico City and brings them closer to the source of The Rising Darkness.

In order to fend off a vicious attack, John summons a demon into himself. Chas, Zed and Anne Marie race against time to save John before it's too late.

Thousands of people across Brooklyn have slipped into a mysterious coma, including Chas' daughter. John must find and defeat the evil behind it before it consumes the city.

Manny sends John to help an old friend, Ritchie Simpson, at Ivy University where a group of students have a found a way into an alternate dimension only to be met by a maniacal killer.

When John heads to a local hospital to investigate a mysterious attack, he enlists an unwitting Manny to help him. Meanwhile, a health scare causes Zed to question the source of her visions.

The truth behind the Rising Darkness emerges as John and Zed reteam with Jim Corrigan - and encounter a vengeful Papa Midnite.