Season Six Episode Guide

The Flash (601) - Into the Void

Into the Void

Episode #: 601
Air Date: 10.08.2019
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The appearance of dangerous black holes around the city leads Team Flash to a comatose vlogger, while Iris and Barry struggle to come to terms with their recent loss. Meanwhile, Caitlin attends a funeral that brings her back into the life of an old friend -- a scientist who is pursuing unorthodox research to cure disease.
The Flash (602) - A Flash of the Lightning

A Flash of the Lightning

Episode #: 602
Air Date: 10.15.2019
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Facing his impending death, Barry attempts to travel into the future to witness the coming crisis firsthand -- sending him to Earth-3 for help from Jay Garrick. Meanwhile the team pursues a troubled meta-human girl suspected of a crime, and Cecile finds herself in conflict over her role as a prosecutor.
The Flash (603) - Dead Man Running

Dead Man Running

Episode #: 603
Air Date: 10.22.2019
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Amidst a series of attacks by a meta-human with a thirst for dark matter, Barry recruits Frost for help in his investigation. Meanwhile Ralph and Cecile come to the aid of Ralph's mother, and another Harrison Wells turns up in Central City.
The Flash (604) - There Will Be Blood

There Will Be Blood

Episode #: 604
Air Date: 10.29.2019
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Cisco finds himself at cross purposes with Barry when he refuses to give up trying to save his life. Ramsey Rosso exploits his deadly new abilities to save his own life.
The Flash (605) - Kiss Kiss Breach Breach

Kiss Kiss Breach Breach

Episode #: 605
Air Date: 11.05.2019
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When Breacher shows up to deliver bad news about his daughter, Cisco finds himself under suspicion for a horrific crime. Killer Frost continues to try and stop Ramsey, and Joe finds himself trapped with "Nash" Wells.
The Flash (606) - License to Elongate

License to Elongate

Episode #: 606
Air Date: 11.19.2019
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Barry joins Ralph on a trip to Midway City, where a breakthrough on a long-simmering missing persons case takes them inside an auction for the super rich. Cecile attempts to use her powers to help Chester P. Runk get his life back on track, and Wells turns to Iris' new intern for aid.
The Flash (607) - The Last Temptation of Barry Allen, Part 1

The Last Temptation of Barry Allen, Part 1

Episode #: 607
Air Date: 11.26.2019
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Facing his imminent demise in the coming crisis, Barry finds himself hallucinating Ramsey Rosso -- who claims that Barry can save himself and everyone he loves by giving in to the infection now spreading through his body.
The Flash (608) - The Last Temptation of Barry Allen, Part 2

The Last Temptation of Barry Allen, Part 2

Episode #: 608
Air Date: 12.03.2019
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Team Flash finds itself running out of options when they must go up against Bloodwork, a city of blood-infected citizens, and their most dangerous enemy ever -- the Dark Flash, Barry himself under Ramsey's control.
The Flash (609) - Crisis on Infinite Earths, Part 3

Crisis on Infinite Earths, Part 3

Episode #: 609
Air Date: 12.10.2019
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Barry leads a team to discover the shocking source of the anti-matter wave, as John Constantine leads Mia and Diggle into Purgatory. Kara contemplates a dangerous way to bring back her loved ones, and Iris is sent to recruit the final Paragon -- a young scientist living on Earth-1.
The Flash (610) - Marathon


Episode #: 610
Air Date: 02.04.2020
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Iris' investigation of a shadowy group trafficking in metas and meta tech makes her the target of a high-powered assassin. Meanwhile, Barry and John Diggle travel to Lian Yu in the hopes of finishing one last mission for Oliver.
The Flash (611) - Love Is A Battlefield

Love Is A Battlefield

Episode #: 611
Air Date: 02.11.2020
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Barry finds himself pushed away by Iris, who takes it upon herself to thwart Amunet's efforts to steal valuable tech before her former boyfriend gets to it first. Frost tries to play matchmaker for Allegra.
The Flash (612) - A Girl Named Sue

A Girl Named Sue

Episode #: 612
Air Date: 02.18.2020
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Ralph finally finds his long-missing person, Sue Dearbon, and finds himself teaming up with her on a daring adventure to stop the gangster who is trying to kill her. Meanwhile Iris finds herself trapped inside a mirror prison, where a despondent Eva McCulloch has given up all hope of escape.
The Flash (613) - Grodd Friended Me

Grodd Friended Me

Episode #: 613
Air Date: 02.25.2020
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Barry is drawn into a mental prison, where his former foe Grodd is seeking his help. Eva shows Iris why she believes they cannot escape from the Mirrorverse, and Allegra learns about Nash's special interest in her.
The Flash (614) - Death of the Speed Force

Death of the Speed Force

Episode #: 614
Air Date: 03.03.2020
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Wally West returns home with a warning that something is wrong with the speed force, prompting Barry to take extreme measures. Meanwhile a meta with the ability to manipulate time attacks a Russian socialite, aging her victim to death.
The Flash (615) - The Exorcism of Nash Wells

The Exorcism of Nash Wells

Episode #: 615
Air Date: 03.17.2020
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Cisco attempts to save Nash after the team discovers that other Wells were fused within him after Crisis -- including Eobard Thawne, who is fighting to take control. Meanwhile the Flash takes on a dangerous Black Hole operative, code-named Sunshine, knowing that he now has a finite amount of Speed Force left in him.
The Flash (616) - So Long and Goodnight

So Long and Goodnight

Episode #: 616
Air Date: 04.21.2020
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Joe West finds himself the target of a Black Hole assassin -- the merciless Rag Doll, who captures someone close to Joe to lure him into a trap. Ralph and Cisco cross paths with Sue, while Eva continues to plot her revenge from the mirror world.
The Flash (617) - Liberation


Episode #: 617
Air Date: 04.28.2020
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Barry becomes convinced that Iris is not the woman he knows, but finds it difficult to convince the others that she is an imposter -- while Eva plans her final move. Meanwhile Ralph and Cisco discover an ailing Caitlyn nearly frozen inside her apartment.
The Flash (618) - Pay the Piper

Pay the Piper

Episode #: 618
Air Date: 05.05.2020
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Godspeed returns demanding Barry's speed, Team Flash seeks help from Hartley Rathaway -- a sonic-powered villain who holds the Flash responsible for a personal tragedy. Iris finds an ally inside the Mirrorverse, and Ralph gives counsel to Frost.
The Flash (619) - Success Is Assured

Success Is Assured

Episode #: 619
Air Date: 05.12.2020
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When Eva marshals her forces to go after her husband, Barry and the team must protect Carver from her quest for vengeance. Ralph is reunited with Sue, only to find her about to make a mistake that could haunt her forever.