The Flash: Season 6

2019
19 episodes

When Barry and Iris deal with loss of their daughter, the team faces their greatest threat yet - one that threatens to destroy all of Central City; Killer Frost has a brush with death that will change her relationship with Caitlin. Faced with the news of his impending death, Barry's resiliency suffers as he struggles to fight fate.

Season 6 of The Flash premiered on October 8, 2019 and has 19 episodes, from "Into The Void" to "Success Is Assured". The last episode aired on May 12, 2020.

Where to watch The Flash

In the United States, you can stream The Flash on Netflix. You can also buy it on Google Play Movies and Fandango At Home. It is on streaming services in 125 countries.

Where to watch

Episodes

Episode 1Into The VoidAired 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.
- 42m
- Directed by Gregory Smith
- Written by Eric Wallace and Kelly Wheeler
Guest stars
- Brandon McKnight Chester P. Runk
- Ryan Handley Godspeed
- LaMonica Garrett Mar Novu / The Monitor
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Stephanie Izsak Uni #1
- Gerry South Night Manager
- Neil Webb Gat
- Victoria Park Kamilla Hwang
Episode 2A Flash of the LightningAired 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 meta-human.
- 42m
- Directed by Chris Peppe
- Written by Jeff Hersh and Sam Chalsen
Guest stars
- Kayla Compton Allegra Garcia
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Kunal Jaggi Steven Lee
- Ken Camroux-Taylor Judge Hankerson
- Shawn Stewart Mitch Romero
- Victoria Park Kamilla Hwang
- Alexa Barajas Esperanza Garcia / Ultraviolet
- Morena Baccarin Gideon (voice) (uncredited)
Episode 3Dead Man RunningAired 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 meta-human with an unquenchable thirst. Meanwhile, Ralph uncovers a family secret.
- 42m
- Directed by Sarah Boyd
- Written by Thomas Pound and Lauren Barnett
Guest stars
- Kayla Compton Allegra Garcia
- Amy Pietz Debbie Dibny
- Spencer Teeter Goon
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Mark Sweatman Norvock
- Neil Webb Gat
- Shawn Stewart Mitch Romero
- Nate Kelly Player #1
Episode 4There Will Be BloodAired 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.
- 42m
- Directed by Marcus Stokes
- Written by Lauren Certo and Sterling Gates
Guest stars
- Meera Simhan Rachel Rosso
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Nickolas Baric Security Guard
- James Rha Dr. Rodrigo
Episode 5Kiss Kiss Breach BreachAired 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.
- 42m
- Directed by Menhaj Huda
- Written by Joshua V. Gilbert and Kelly Wheeler
Guest stars
- Danny Trejo Breacher
- Matt Ellis Agent Zak Zeal
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Mark Sweatman Norvock
- Victoria Park Kamilla Hwang
Episode 6License to ElongateAired 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.
- 42m
- Directed by Danielle Panabaker
- Written by Jeff Hersh and Thomas Pound
Guest stars
- Kayla Compton Allegra Garcia
- Brandon McKnight Chester P. Runk
- Carlo Rota Remington Meister
- Rebecca Finch Idna
- Sean Kohnke Armed Guard (uncredited)
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Tess Atkins Natalie
- Rebecca Roberts January Galore
Episode 7The Last Temptation of Barry Allen (1)Aired 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.
- 42m
- Directed by Chad Lowe
- Written by Gabriel Garza and Jonathan Butler
Guest stars
- Kayla Compton Allegra Garcia
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Victoria Park Kamilla Hwang
- Emmett Lee Stang Mystery Man
- Michelle Harrison Speed Force Nora
Episode 8The Last Temptation of Barry Allen (2)Aired 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.
- 42m
- Directed by Michael Nankin
- Written by Joshua V. Gilbert and Kristen Kim
Guest stars
- Kayla Compton Allegra Garcia
- Meera Simhan Rachel Rosso
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Kailey Spear Terrified Civilian 1
- Sam Spear Terrified Civilian 2
- Leah Barley Blood Sister (uncredited)
- Ryan Minaker Blood Brother (uncredited)
- Victoria Park Kamilla Hwang
Episode 9Crisis on Infinite Earths: Part Three (III)Aired December 10, 2019
Pariah enlists Black Lightning to help stop the Anti-Monitor after Flash-90 shares what he learned from his battle in ‘Elseworlds.’ With the help of Black Lightning, Barry, Cisco and Killer Frost come up with a plan that could save them all. Meanwhile, Iris has a heart-to-heart with Ryan Choi, while Oliver and Diggle return to an old familiar stomping ground. The crossover starts on Supergirl S05E09 and Batwoman S01E09. It continues on Arrow S08E08 and Legends of Tomorrow S05E01.
- 42m
- Directed by David McWhirter
- Written by Lauren Certo, Eric Wallace and Sterling Gates
Guest stars
- Melissa Benoist Kara Danvers / Supergirl
- Tyler Hoechlin Clark Kent / Superman
- Katherine McNamara Mia Smoak
- Jon Cryer Lex Luthor
- Caity Lotz Sara Lance / White Canary
- Brandon Routh Ray Palmer / The Atom / Clark Kent / Superman
- Elizabeth Tulloch Lois Lane
- John Wesley Shipp Barry Allen / The Flash (Earth 90)
Episode 10MarathonAired February 4, 2020
After "The Citizen" prints an explosive story, Iris' life is threatened; refusing to hide from her attackers, Iris sets out to expose a dangerous organization; Barry must face the consequences of the Crisis and fulfill Oliver Queen's wish for him.
- 42m
- Directed by Stefan Pleszczynski
- Written by Sam Chalsen and Lauren Barnett
Guest stars
- Kayla Compton Allegra Garcia
- Eric Nenninger Joseph Carver
- Victoria Park Kamilla Hwang
- Gary Starkell Riggs Wellington
- Emmett Lee Stang Mystery Man
- Arran Henn Catco Reporter
- Sonia Beeksma KPJT Reporter
- Jarryd Baine Channel 52 News Reporter
Episode 11Love Is a BattlefieldAired February 11, 2020
Barry and Iris plan a romantic dinner for Valentine's Day but their evening is interrupted by an old foe - Amunet; Frost gets into the holiday spirit and attempts to help Allegra reconnect with an old love.
- 42m
- Directed by Sudz Sutherland
- Written by Jeff Hersh and Kelly Wheeler
Guest stars
- Kayla Compton Allegra Garcia
- Robert Zen Humpage Saul Fankel
- Tyson Arner Emerson Fairweather
- Rodrigo Massa Waiter
- Phillip Mitchell Security Guard
- Kyle Strauts Lars Patel
- Darryl Quon Skullstar
- Tess Atkins Natalie
Episode 12A Girl Named SueAired February 18, 2020
After months of searching for Sue Dearbon, Ralph gets a lead on her whereabouts and finally comes face to face with his missing client. However, Sue refuses to return home to her family, and instead, takes Ralph on a daring adventure. Iris faces a new challenge while Barry considers a potentially dangerous request from a trusted source.
- 42m
- Directed by Chris Peppe
- Written by Lauren Certo and Thomas Pound
Guest stars
- Silver Kim John Loring
- Efrat Dor Eva McCulloch / Mirror Monarch
- Travis Fawcett Security Guard
- Brian Johnston Bank Manager
- Alexa Barajas Esperanza Garcia / Ultraviolet
- Natalie Dreyfuss Sue Dearbon
Episode 13Grodd Friended MeAired February 25, 2020
Feeling overwhelmed with all the changes since Crisis, Barry conducts an experiment that goes awry and puts him directly in Gorilla Grodd’s path. Expecting the worst, Barry is surprised when Grodd asks for his help. Unfortunately for both The Flash and Grodd, things get worse when another villain appears – Solovar. Meanwhile, Iris works with Eva to escape the Mirrorverse.
- 42m
- Directed by Stefan Pleszczynski
- Written by Joshua V. Gilbert and Kristen Kim
Guest stars
- Kayla Compton Allegra Garcia
- Brandon McKnight Chester P. Runk
- David Sobolov Gorilla Grodd (voice)
- Keith David Solovar (voice)
- Andy Mientus Hartley Rathaway / Pied Piper
- Victoria Park Kamilla Hwang
- Efrat Dor Eva McCulloch / Mirror Monarch
- Morena Baccarin Gideon (voice) (uncredited)
Episode 14Death of the Speed ForceAired March 10, 2020
Kid Flash returns to Central City with a Zen attitude and new tricks up his sleeve. While thrilled to see his family again, Wally confides to Barry that he returned because he thinks there is something wrong with the speed force. Meanwhile, Cisco returns from his fact-finding mission across Earth-Prime.
- 42m
- Directed by Brent Crowell
- Written by Sam Chalsen and Emily Palizzi
Guest stars
- Keiynan Lonsdale Wally West / Kid Flash
- Vanessa Walsh Frida Novikov / Turtle-2
- Victoria Park Kamilla Hwang
- Efrat Dor Eva McCulloch / Mirror Monarch
- Tess Atkins Natalie
- Elizaveta Neretin Maria Volkova
- Sasha Piltsin Bodyguard
- Andre Roshkov Pilot
Episode 15The Exorcism of Nash WellsAired March 17, 2020
The Flash takes on a dangerous new meta named Sunshine. Cisco sets out to help Nash.
- 42m
- Directed by Eric Dean Seaton
- Written by Sterling Gates and Lauren Barnett
Guest stars
- Kayla Compton Maya
- Briana Tedesco Young Maya
- Efrat Dor Eva McCulloch / Mirror Monarch
- Jessica Lee Arielle Boyd
- Natalie Sharp Millie Rawlins / Sunshine
- Stephanie Izsak Officer Daisy Korber
- Patrick Sabongui Mirror Chief David Singh
- Victoria Park Kamilla Hwang / Mirror Kamilla Hwang
Episode 16So Long and GoodnightAired April 21, 2020
After Black Hole hires Rag Doll to kill Joe, Singh suggests he go into Witness Protection but Joe refuses to stop investigating Carver. While investigating Carver with Cisco, Ralph runs into Sue. Iris becomes suspicious of Eva.
- 42m
- Directed by Alexandra La Roche
- Written by Thomas Pound and Kristen Kim
Guest stars
- Kayla Compton Allegra Garcia
- Phil LaMarr Rag Doll (voice)
- Troy James Peter Merkel / Rag Doll
- Eric Nenninger Joseph Carver
- Efrat Dor Eva McCulloch / Mirror Monarch
- Rebecca Roberts January Galore
- Elizabeth Weinstein Financial Advisor
- Andrew J. Hampton Maurice
Episode 17LiberationAired April 28, 2020
After recent events, Barry takes a closer look at his life with Iris. Eva makes a bold move.
- 42m
- Directed by Jeffrey W. Byrd
- Written by Gabriel Garza and Jonathan Butler
Guest stars
- Sendhil Ramamurthy Dr. Ramsey Rosso / Bloodwork
- Efrat Dor Eva McCulloch / Mirror Monarch
- Wren Walker Guard
- William MacDonald Gene Huskk
- Stephanie Izsak Officer Daisy Korber
- Patrick Sabongui Mirror Chief David Singh
- Victoria Park Mirror Kamilla Hwang
Episode 18Pay the PiperAired May 5, 2020
When Godspeed returns, Barry turns to Hartley Rathaway for help. However, things get tense quickly after Barry realizes one of the changes from Crisis is that The Flash and Pied Piper are now enemies. Meanwhile, Iris tries to escape the Mirrorverse.
- 41m
- Directed by Amanda Tapping
- Written by Jess Carson
Guest stars
- Kayla Compton Allegra Garcia
- Andy Mientus Hartley Rathaway / Pied Piper
- BD Wong Godspeed (voice)
- Joel Semande Roderick Smith
- Victoria Park Kamilla Hwang
- Efrat Dor Eva McCulloch / Mirror Monarch
Episode 19Success Is AssuredAired May 12, 2020
Barry considers a risky plan to save Iris from the Mirrorverse. Ralph attempts to stop Sue from making a grave mistake that could destroy her life.
- 42m
- Directed by Phil Chipera
- Written by Kelly Wheeler and Lauren Barnett
Guest stars
- Kayla Compton Allegra Garcia
- Eric Nenninger Joseph Carver
- Mark Brandon Richard Dearbon
- Victoria Park Kamilla Hwang
- Efrat Dor Eva McCulloch / Mirror Monarch
- Nancy Hillis Penelope Dearbon
- Andrew J. Hampton Maurice
- Darcy Hinds McCulloch Guard