The Flash: Season 4

Iris has been aiding Team Flash in Central City for six months, but refuses to grieve Barry. A flying samurai with superpowers appears in Central City, threatening to destroy the city if the real Flash does not face him. Cisco reveals he has formulated a way to bring back Barry without destabilizing the Speed Force and tracks down Caitlin for help, but is forbidden by Iris to bring Barry back. Against Iris' orders, Team Flash successfully returns Barry, who rambles random statements and continua

When Barry, Joe, and Cisco report to a crime scene, they discover remnants of a mysterious code. Cisco presents Barry with a technologically advanced suit, intended to facilitate his activities. He tests it out, trying to save someone from a haywire car controlled by metahuman Ramsey Deacon. Gypsy arrives on Earth-1 for a date with Cisco, who is forced to cancel it so as to focus on Deacon. Acting on a suggestion from Caitlin, Iris signs her and Barry up for couples therapy to sort out their rel

In flashbacks, the intelligent man observes Becky Sharpe, a woman with unending bad luck, and determines that she will be easily manipulated. In the present, Becky robs a bank and gets away when Barry slips on marbles. Harry arrives from Earth-2 and tells Wally that Jesse has decided to break up with him to focus on her vigilantism. Cisco deduces that Becky is a metahuman with the power of favorable luck while inducing misfortune to others. Barry realizes that the portal he used to escape the Sp

Gypsy's father, Breacher, attacks Cisco, vowing to hunt and kill him in 24 hours, but allowing the romance should he survive. Team Flash learns that the bus driver was murdered and tracks down another passenger, Ralph Dibny, a former corrupt CCPD detective who Barry exposed that is now a private investigator. As two thugs attack Dibny, he is revealed to have the power to stretch. Caitlin stabilizes his powers with a serum. The team learns that Ralph has been blackmailing Mayor Anthony Bellows ov

Felicity joins Iris' bachelorette party. Mocking Cisco's plans for Barry's bachelor party, Ralph takes the men to a strip club, where they find Cecile's daughter, Joanie, working. Joe confronts her, but she states that she is only doing feminist research. Ralph incites a brawl, leading to the men's arrest until Harry posts bail. Meanwhile, Amunet's enforcer, Norvok, demands Caitlin's return and attacks the women when she refuses. Killer Frost emerges and repels him, later telling Iris that Caitl

Barry trains Ralph to use his abilities, with Cisco making a stretchable suit for him. Another bus metahuman, a Lakota Sioux Native named Mina Chaytan who can animate statues, starts attacking Central City and stealing pieces of a Black Bison necklace, which she claims belongs to her tribe. When Barry and Ralph catch up to her, she attacks Barry with a caveman statue and attempts a getaway. Ralph chooses to stop her, but a little girl is injured in the process. Ralph regrets his actions, but is

Barry and Joe interrogate DeVoe and his wife Marlize to try and get more information. In flashbacks, DeVoe and Marlize build a thinking cap to improve his brain capacity, powering it through the particle accelerator explosion. DeVoe's increased brain power accelerates his amyotrophic lateral sclerosis, forcing his wife to build him a special chair to keep him alive. Barry discovers the camera in the Samuroid head and goes to DeVoe's house, narrowly avoiding being caught by DeVoe's wife. Barry la

Barry, Oliver, Sara, Alex, Martin and Jax wake up in a Nazi concentration camp on Earth-X wearing power dampeners. The arriving SS Sturmbannführer is revealed to be the Earth-X doppelgänger of Quentin Lance, who plans to execute them, but they are saved by Leo Snart (the Earth-X doppelgänger of Leonard Snart) and Ray Terrill. Snart and Terrill take them to the headquarters of the Freedom Fighters, where the team meets the resistance movement's leader, General Schott (Winn Schott's Earth-X doppel

While out Christmas shopping, Barry is ambushed and kidnapped by DeVoe while Caitlin is kidnapped from Jitters by Amunet. Iris claims they have to look for both of them, despite Harry's claim that they have insufficient time and resources and that they can only afford to search for one. Caitlin is forced by Amunet to perform surgery on a metahuman named Dominic Lanse who can read minds. They try to escape, but Amunet blocks their exit. Caitlin manages to briefly incapacitate Amunet, so she and D

Barry stands trial for the murder of Clifford DeVoe with Cecile representing him. Cisco and Joe have to leave during the trial for a meta investigation in which a meta caused people to collapse. Singh reveals to Joe that he is appearing as a witness for the prosecution against Barry. The meta is eventually discovered to be Neil Borman, a meta whose production of radiation is unintentionally causing the illnesses and collapsing. Barry takes him on, but is ill-equipped to deal with the situation.

Barry uses his speed to secretly help the guards contain the other inmates during a prison riot. He also befriends Dave Ratchet, his father's former cellmate. The next day, Barry meets Axel Walker, who later gets broken out of prison by his mother Zoey Clark, his father's one-time partner Prank. Axel challenges Ralph by threatening to cause chaos in the city. Ralph attempts to stop him, but is wounded by Axel and evacuated by Cisco. Ralph sneaks into the prison to talk to Barry about being scare

Cecile develops telepathic abilities due to her pregnancy combined with the dormant dark matter in her cells, but Caitlin assures her the effects should be temporary. In prison, Barry learns that Ratchet is innocent of a robbery-homicide that was actually committed by Sylbert Rundine fifteen years prior and asks the team to look into the case. Rundine turns out to be a bus meta with the ability to shrink and enlarge objects and he shrinks Cisco and Ralph while escaping. Harry's attempted cure ba

Wolfe plans to sell Barry, Ramsey Deacon, Becky Sharpe, Mina Chaytan, and Sylbert Rundine to Amunet, so they plan to escape. Cecile discovers Wolfe's plans after reading his mind. Ralph encounters a former colleague and his negative interaction with him prompts the discovery that he can shapeshift. His lack of mastery of the new ability prevents his attempt to foil Amunet's deal with Wolfe. Barry helps the metas escape the power dampeners, but they are cornered by Wolfe and Amunet. DeVoe arrives

Barry is put on indefinite leave at the CCPD due to his connection with the DeVoe case. The team encounters another bus metahuman named Izzy Bowin with sound wave abilities that she can amplify with her violin. She manages to use her abilities when DeVoe (inside Sharpe's body) comes to claim her. Barry and Ralph help train Izzy to refine her abilities, which proves difficult when she gets hurt. Eventually, DeVoe shows up once again, using Dominic's and Becky's abilities to make Barry experience

Jesse comes to Earth-1 to have a talk with her dad. Eco-terrorist Veronica Dale sets off a nuclear bomb, which Barry tries to stop by entering a form of superspeed known as Flashtime where everything is frozen. However, the bomb has already detonated and he and Jesse cannot stop it or save everyone with superspeed. Jay Garrick comes from Earth-3 to help, but they are still unable to stop it. Barry remains in Flashtime for hours, bringing each of his friends into it in an attempt to find a soluti

Eric Frye, a metahuman with fire powers, tries to rob Central City Bank. Another bus meta named Matthew Kim touches Frye, which causes his powers to transfer to Jaco Birch. When Joe, Iris, and Barry turn up to ask Kim a few questions, Barry and Iris come into contact with Kim, causing Barry to lose his speed and Iris to gain superspeed. Inspired by Thawne, Harry plans to build his own thinking cap to outwit DeVoe. With their roles reversed, Iris becomes Central City's hero speedster, while Barry

Barry and Ralph train to defeat DeVoe, with Barry becoming annoyed at Ralph's apparent inability to be serious. The team manages to locate Janet Petty. When Barry and Ralph confront her, it is revealed that Petty can manipulate a person's gravitational pull, which she demonstrates on Barry. Fearing once again that Ralph is not taking things seriously, Barry refuses to work with him. Ralph reveals his comedic attitude is due to a difficult childhood where his father abandoned him, causing him to

Team Flash tracks down the final bus meta Edwin Gauss, but is followed by the Samuroid, who injures Caitlin. The team rushes back to S.T.A.R. Labs to regroup and heal. Caitlin reveals to Iris that Killer Frost is activated by her adrenal gland and she is working on a way to separate them. Harry introduces a tuning fork weapon that mimics Izzy's abilities and can defeat DeVoe. Ralph reveals to Barry that he is not afraid of losing his own life, but of Team Flash losing theirs, as he considers the

With DeVoe moving forward with his plans, Team Flash decides to secure Neil Borman. Barry and Cisco travel to Earth-X to recruit Leo Snart as backup, but are followed to Earth-1 by Siren-X, the Earth-X doppelganger of Laurel Lance. Team Flash plans to deliver Borman to a safe A.R.G.U.S. facility, using a suit to contain the radiation in case Borman goes nuclear. Snart agrees to help, but claims he can only stay for 24 hours, as he is due to marry Ray Terrill. DeVoe attempts to intercept the tran

DeVoe starts gathering the technology required to build the Enlightenment Machine, murdering anyone who gets in his way. Barry, Cisco, Iris, and Harry attempt to trigger Killer Frost's powers in Caitlin, but do not succeed. Harry reveals to the team that the amount of dark matter he used with the Thinking Cap caused brain damage. Cisco, Gypsy, Barry, and Caitlin fight Marlize and DeVoe when they move to acquire the computers required to power the Enlightenment Machine. Flashbacks reveal partiall

After Harry is expelled from the Council of Wells due to his declining intelligence, Cisco assembles a Council of Harrisons to try and come up with a way of stopping Harry's intelligence loss. Team Flash reluctantly go to Amunet for help, encountering Norvok in the process, though Barry insists Amunet must not kill. The team is eventually given a bomb made from Amunet's metal which will be capable of destroying one of DeVoe's satellites and Harry manages to work out that DeVoe's plan might be ch

DeVoe infiltrates the A.R.G.U.S. facility holding Fallout by impersonating John Diggle and kills most of the security, except for some hostages; he then overcharges and kills Fallout to act as a nuclear battery for the satellites. Barry runs to Star City and brings back John so he can reveal the location of the facility. Caitlin and Cisco ask Barry to train them in Flashtime so that they can save the hostages and Barry can follow DeVoe through the breach before it closes. In the last stages of p

After the Enlightenment begins, Marlize uses Cecile's powers to send Barry into DeVoe's consciousness and find the good left in him. Barry finds Ralph alive and together they find the "good" DeVoe dead. DeVoe attempts to keep them from reaching the nexus of his mind, following Team Flash to a pocket dimension. In his consciousness, DeVoe multiplies himself to fight Barry and Ralph, taking down Team Flash. Barry and Ralph reach the nexus; Barry wakes up in the real world and Ralph reclaims his bo