The Flash (2014– )
24 user 11 critic

Snow Pack 

Caitlin must resolve her relationship with her mother when Icicle returns to enact the next phase of his devious plan; Iris takes matters into her own hands after Barry makes a decision about their family without consulting her.


Jeff Cassidy


Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 8 more credits »




Episode complete credited cast:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West-Allen
Danielle Panabaker ... Caitlin Snow / Killer Frost
Carlos Valdes ... Cisco Ramon (credit only)
Hartley Sawyer ... Ralph Dibny
Danielle Nicolet ... Cecile Horton
Jessica Parker Kennedy ... Nora West-Allen / XS
Tom Cavanagh ... Sherloque Wells / Eobard Thawne
Jesse L. Martin ... Joe West
Sarah Carter ... Grace Gibbons / Cicada
Susan Walters ... Dr. Carla Tannhauser
Kyle Secor ... Thomas Snow / Icicle
Bruce Crawford ... JP Chipera
Everick Golding ... Trevor Shinick
Islie Hirvonen ... Grace Gibbons


When Icicle returns to enact the next phase of his devious plan, Caitlin and her mother, Dr. Carla Tannhauser, must resolve their long-combative relationship to defeat the icy monster. After Barry makes a big decision about their family without consulting her, Iris decides to take matters into her own hands. Written by sarah_l91

Plot Summary | Plot Synopsis


TV-PG | See all certifications »

Did You Know?


Eobard has stated that the Negative Speed Force is not meant to be used by every speedster, since it has a negative effect; as it (apparently) causes most speedsters to go insane. In the DC comics, Barry also acquired the Negative Speed Force powers and had become the Negative Flash. It is possible that with Nora, having the Speed Force and Negative Speed Force will kill her or make her insane. See more »


Barry Allen: Are you okay?
Caitlin Snow: I will be as soon as we find Icicle. Uh, my mom told me what he stole. It's a prototype cryo-atomizer.
Joe West: And what can he do with that?
Caitlin Snow: Nothing good.
See more »


References Back to the Future (1985) See more »

User Reviews

Opening Scene
5 September 2019 | by legallypnk-49611See all my reviews

I'm going to say I'm giving this episode a 10/10 solely due to the acting in the opening scene. Candice Patton and Grant Gustin were incredible. It's honestly a shame that The Flash doesn't provide them an opportunity to show more range regularly (I get why). No matter how irritating Iris maybe or has been, or whether you like character or not Candice Patton is extremely talented. Grant Gustin as well, his mannerisms and emotion are spot on in every episode. Like it's honestly a shame this is a CW show and they're not allowed to act through the full spectrum of their range.

I never rate anything I watch. I think for the most part until recently Nora has been annoying and unnecessary but it gets better toward the end.

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Release Date:

23 April 2019 (USA) See more »

Filming Locations:

British Columbia, Canada

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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