Season 4 Episodes

Episode Guide

Don't Run

Season 4, Episode 9 - Air Date: 12/5/2017
From The CW: Amunet (guest star Katie Sackhoff) kidnaps Caitlin (Danielle Panabaker) and puts meta-dampener handcuffs on her to keep her from turning into Killer Frost.
Episode Guide

Crisis on Earth X, Part 3

Season 4, Episode 8 - Air Date: 11/28/2017
From The CW: Barry (Grant Gustin) and Iris's (Candice Patton) wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony.
Episode Guide

Therefore I Am

Season 4, Episode 7 - Air Date: 11/21/2017
From The CW: Barry (Grant Gustin) comes face to face with DeVoe (guest star Neil Sandilands). Devoe's past is revealed through flashbacks.
Episode Guide

When Harry Met Harry…

Season 4, Episode 6 - Air Date: 11/14/2017
From The CW: When collectors of Native American artifacts are attacked by a meta named Mina Chayton (guest star Chelsea Kurtz) who can bring inanimate objects to life, Barry (Grant Gustin) turns to a surprising ally for help.
Episode Guide

Girls Night Out

Season 4, Episode 5 - Air Date: 11/7/2017
From The CW: Having received an ominous threat from her old boss, Amunet (guest star Katee Sackhoff), Caitlin (Danielle Panabaker) fears that her past time as Killer Frost may be back to haunt her.
Episode Guide

Elongated Journey Into Night

Season 4, Episode 4 - Air Date: 10/31/2017
From The CW: Cisco (Carlos Valdes) is shocked when Gypsy's (guest star Jessica Camacho) father, Breacher (guest star Danny Trejo), shows up on Earth-1.
Episode Guide

Luck Be a Lady

Season 4, Episode 3 - Air Date: 10/24/2017
From The CW: Barry (Grant Gustin) and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky (guest star Sugar-Lyn Beard) nicknamed Hazard, who has the ability to give others bad luck, while cashing in the benefits for herself.
Episode Guide

Mixed Signals

Season 4, Episode 2 - Air Date: 10/17/2017
From The CW: Barry (Grant Gustin) has his hands full when he takes on a dangerous meta (guest star Dominic Burgess) who can control technology, while also confronting an obstacle in his personal life: the ramifications of abandoning Iris (Candice Patton) for six months to balance the Speed Force.
Episode Guide

The Flash Reborn

Season 4, Episode 1 - Air Date: 10/10/2017
From the CW: With Barry (Grant Gustin) in the speed force, Iris (Candice Patton), Kid Flash (Keiynan Lonsdale), Joe (Jesse L.