|Accept my lifeblood, and you could use it to achieve so much more than I ever could. Become a hero beyond your wildest dreams. The power to strike down death, life eternal, the grand miracle at your command. Save the world and live. Have all you want. Embrace it, Barry. Just confess the truth. Do you have doubts?
It's a beautiful life, Barry. All you have to do is choose it. Choose life.
Barry Allen lived a normal life as a perpetually tardy CSI in the Central City Police Department. He was adopted by his best friend, Iris West's father, Detective Joe West after Barry's mother was murdered. Barry's life was forever changed the night the S.T.A.R. Labs particle accelerator exploded, creating a dark-matter lightning storm that struck Barry, bestowing him with super-speed and making him the fastest man alive. But Barry wasn't the only person who was given extraordinary abilities that night. The dark matter also created metahumans, many of whom have wreaked havoc with their powers on Central City. Barry teamed up with his friends at S.T.A.R. Labs, Caitlin Snow, Cisco Ramon, and Dr. Harrison Wells, to begin a journey as The Flash and protect the people of Central City from these powerful new threats.
After years of battling villains and repeatedly saving Central City, Barry and his wife Iris thought they could finally find time to enjoy being newlyweds, but their wedded bliss was interrupted by the appearance of their future daughter Nora West-Allen, who is a speedster known as XS, who has made a big mistake and needs her parents' help to get home. With Nora in the picture, Barry and Iris' lives are flipped upside down and, while Nora idolizes Barry and his legacy as The Flash, she carries with her a mysterious grudge towards Iris. Team Flash rallies to find a way to help Nora return to her time, only to discover her presence has altered the timeline and brought the early arrival of the most ruthless, vicious, and relentless villain Team Flash has ever faced: Cicada. They enlist the help of Sherloque Wells to aid in the search for Cicada, while Barry teaches a stuck Nora everything he knows about being a speedster and what it means to be a hero. Nora assists Team Flash with the take-down of a surge of new "metahumans," but her place on the team is threatened when it is revealed that she is in league with none other than one of The Flash's earliest arch-enemies, Eobard Thawne. Ultimately, Nora is innocent in the grand scheme of Thawne's plan and helps Team Flash realize a way to defeat both Cicada and Thawne – yet, vanquishing their foes yields an agonizing loss as Nora erases herself from the timeline, leaving all of Team Flash devastated.
Reeling from the loss of Nora, Barry throws himself into work, defeating a record number of metas over the summer, while the rest of Team Flash deals with changes of their own – Cisco, having taken the metahuman cure, is no longer Vibe, Joe is now Captain of C.C.P.D., D.A. Cecile Horton is now considering leaving the district attorney's office, and Ralph Dibny is now searching for a missing heiress named Sue Dearbon. But all of that is put on hold when Dr. Ramsey Rosso, intent on curing death, is overtaken by his own desperation and ambition giving birth to a new villain, Bloodwork.
- Grant Gustin as The Flash/Dark Flash (Barry Allen)
- Candice Patton as Iris West-Allen
- Danielle Panabaker as Frost (Caitlin Snow)
- Carlos Valdes as Vibe (Cisco Ramon) / Echo (Cisco Ramon)
- Hartley Sawyer as Elongated Man (Ralph Dibny)
- Danielle Nicolet as Cecile Horton
- LaMonica Garrett as The Monitor (Mar Novu) / Anti-Monitor (Mobius) *
- Tom Cavanagh as Pariah (Nash Wells) / Reverse-Flash (Eobard Thawne)
- Jesse L. Martin as Joe West
- Sendhil Ramamurthy as Bloodwork (Ramsey Rosso)
- Victoria Park as Kamilla Hwang
- Brandon McKnight as Chester P. Runk
- Ryan Handley as Godspeed
- John Wesley Shipp as Jay Garrick / The Flash (Barry Allen)
- Michelle Harrison as Joan Williams / Nora Allen (Speed Force)
- Kayla Compton as Allegra Garcia
- Alexa Barajas as Ultraviolet (Esperanza Garcia)
- Shawn Sewart as Mitch Romero
- Mark Sweatman as Michael Norvock
- Meera Simhan as Rachel Rosso
- Tess Atkins as Natalie
- Rebecca Roberts as January Galore (Sue Dearbon)
- LaMonica Garrett is only credited for his respective episode appearances.
|Into the Void
|Eric Wallace & Kelly Wheeler
|October 8, 2019
|While Barry and Iris deal with the heartbreaking loss of their daughter, Nora, the team faces their greatest threat yet — one that threatens to destroy all of Central City. Meanwhile, Killer Frost has a brush with death that results in an unexpected new dynamic that will change her relationship with Caitlin forever.
|A Flash of the Lightning
|Sam Chalsen & Jeff Hersh
|October 15, 2019
|Faced with the news of his impending death, Barry's resiliency suffers as he struggles to fight fate. Meanwhile, Cecile's career as a D.A. conflicts with her identity when she crosses paths with a villainous metahuman.
|Dead Man Running
|Lauren Barnett & Thomas Pound
|October 22, 2019
|Knowing that Crisis is only weeks away, Barry prepares a member of Team Flash for life without him while hunting a terrifying metahuman with an unquenchable thirst. Meanwhile, Ralph uncovers a family secret.
|There Will Be Blood
|Lauren Certo & Sterling Gates
|October 29, 2019
|Barry's efforts to prepare Cisco for Crisis are derailed when Cisco schemes to save Barry's life instead. Meanwhile, Ramsey Rosso uses his deadly new abilities to save his own life, while sacrificing his humanity in the process.
|Kiss Kiss Breach Breach
|Kelly Wheeler & Joshua V. Gilbert
|November 5, 2019
|Cisco's faith in his ability to fill Barry's shoes as Team Leader is upended when he learns of a shocking murder. Meanwhile, Killer Frost trusts no one except herself to hunt down the dangerous Ramsey Rosso.
|License to Elongate
|Thomas Pound & Jeff Hersh
|November 19, 2019
|Barry turns his attention to prepping Elongated Man for life after Crisis and without The Flash, but Ralph ultimately teaches Barry a lesson. Meanwhile, Cecile faces her own moment of self-discovery while helping a recuperated Chester P. Runk reclaim his identity.
|The Last Temptation of Barry Allen, Part 1
|Jonathan Butler & Gabriel Garza
|November 26, 2019
|As Barry Allen stands on the threshold of his impending death in Crisis, his convictions are tested when the monstrous Dr. Ramsey Rosso infects the Flash with a mysterious, hallucinogenic contagion. Meanwhile, reporter Iris West-Allen uncovers a vast conspiracy.
|The Last Temptation of Barry Allen, Part 2
|Kristen Kim & Joshua V. Gilbert
|December 3, 2019
|With the Flash freshly infected by the monstrous Bloodwork, Iris and Cisco battle to help Barry take control of himself before he's lost forever to Ramsey's influence. Meanwhile, the rest of Team Flash fight to reclaim control of Central City from Bloodwork's growing army.