Season 6 - Episode Guide

Team Flash face multiple Godspeeds, but focus on their personal issues: Barry and Iris are grieving over losing Nora, Caitlin is unable to summon Killer Frost, and Cisco deals with being Vibe no longer. However, they're forced to set aside their concerns when a black hole appears at seemingly random locations across Central City, threatening to destroy the metropolis.

Barry travels to Earth-3 to find a way to see the future where the Monitor claims he dies. Meanwhile, Cecile is torn between her powers and her career when she uses her empathic powers to discover that a young metahuman is innocent of murder.

Barry recruits Ramsey to help him stop a mutated Mitch, but Frost doesn't trust the doctor. Ralph's mother Debbie is accused of murder, and another Harrison arrives on Earth-1.

Nash comes to Barry and Cisco and ask them to build something for him in return for his getting them something they want. Meanwhile, Ralph stops investigating the Dearbon case, and Ramsey gains the key to curing his HLH.

While Barry and Iris take a vacation, Cisco is suspected of killing Gypsy and her father comes looking for revenge.

Barry helps Raph investigate Sue Dearbon's disappearance hoping to get him back to Central City for a surprise. Nash recruits Allegra to help him, while Cecile gives Chester some advice.

With Crisis only two days away, Barry faces a crisis from within when Ramsey infects him with his black blood. Meanwhile, Iris, Allegra, and Kamila investigate the secret organization Ralph and Barry saw at the gala.

While Bloodwork and Dark Flash infect Central City, Cisco tries to come up with a way to stop them. Joe is badly injured, and Iris has faith that the real Barry is still alive somewhere within the twisted monstrosity of the dark speedster.

Flash, Killer Frost, and a newly repowered Vibe track down the Anti-Monitor's weapon of destruction and meet an electrifying new hero. Ray, Ralph, and Iris go to recruit the Paragon of Humanity, while Constantine helps Mia and Diggle recover Oliver's soul.

After The Citizen prints an explosive story, Iris's life is threatened. Refusing to hide from those that are attacking her, Iris sets out to expose a dangerous organization. Meanwhile, Barry must face the consequences of the Crisis and fulfill Oliver Queen's wish for him.

Barry and Iris plan a romantic dinner for Valentine's Day but their evening is interrupted by an old foe – Amunet. Meanwhile, Frost gets into the holiday spirit and attempts to help Allegra reconnect with an old love.

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.

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.

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.

The Flash takes on a dangerous new meta named Sunshine. Cisco sets out to help Nash.

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.

After recent events, Barry takes a closer look at his life with Iris. Eva makes a bold move.

When Godspeed returns, Barry turns to Hartley Rathaway for help; things get tense quickly after Barry realizes one of the changes from Crisis is that The Flash and Pied Piper are now enemies; Iris tries to escape the Mirrorverse.

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.