The Flash (2014– )
8 user 14 critic


Caitlin visits her mother to help her understand her growing meta-human powers; Barry tries to convince Julian to let him help investigate a new meta-human attacking Central City.


C. Kim Miles


Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 4 more credits »

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Episode complete credited cast:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West
Danielle Panabaker ... Caitlin Snow
Carlos Valdes ... Cisco Ramon
Keiynan Lonsdale ... Wally West
Tom Cavanagh ... H.R. Wells
Jesse L. Martin ... Joe West
Tom Felton ... Julian Albert
Patrick Sabongui ... Captain David Singh
Susan Walters ... Dr. Carla Tannhauser
Thomas Cadrot ... Nigel
Isaiah Lehtinen Isaiah Lehtinen ... Kid
Briana Rayner ... Receptionist


Desperate to understand what is happening to her, Caitlin visits her mother, Dr. Tannhauser, a renowned biomedical researcher, in the hopes that her mother can provide some answers about Caitlin's growing meta-human powers. However, when Dr. Tannhauser treats her daughter like a test subject, Caitlin grows cold and brings up past wounds causing the two to have a major blowout. Meanwhile, after a mysterious new meta-human attacks Central City, Barry tries to convince Julian to let him assist on the case.

Plot Summary | Add Synopsis


TV-PG | See all certifications »




Release Date:

1 November 2016 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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Did You Know?


In the beginning of the episode, when Earth-19 Harrison Wells is handing out the coffee, he mentions that coffee from his Earth "was wiped out by blight", which is exactly what happened to coffee in the alternate universe in Fringe (2008). This is just one of many references that The Flash (2014) has had to that TV show. See more »


If that column of material was 2,000 degrees Celsius, Caitlin and her mother would not have been able to stand as close to it as they were without getting burned. See more »


Barry Allen: How do you guys say "see ya later" over there?
H.R. Wells: Ah.
[poses dramatically]
H.R. Wells: Until next communion.
See more »


References Inception (2010) See more »


Express Yourself
Written by Charles Wright
Performed by Noisettes
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User Reviews

One for the Writers
2 November 2016 | by scarlettyforestSee all my reviews

This episode took a step back from some of the Dr Alchemy drama and focused on creating character development through the use of a clever motif, creating a fun yet layered experience.

After delivering a stellar episode, and in my opinion one of the best the show has a written in 'The Runaway Dinosaur', writer Zack Stentz continues to prove he's the strongest asset of the Flash's writers room. After reading a couple of the other reviews on this board, I'm quite surprised by the lack of appreciation for episodes such as this, especially given how much it reminds me of an actual comic book story. So I guess I'm going to label this as one for the fans who appreciate episodes with motifs and strong characters.

The episode's motif of 'monsters' cleverly creates an interplay between Caitlin's growing fear of becoming a monster and her mother's literal ice-queen characterisation through the metaphor of a literal Godzilla-style monster plaguing Central city. The introduction of Caitlin's mother, a scientist played by Susan Walters, sheds insight into the Killer Frost origin story in a meaningful and psychologically appealing way, as well as creating empathy towards Caitlin after what one could consider a dry run of sidelining the character as a love interest with minimal depth outside her job at STAR labs. I've always thought that Danielle Panabaker had it within her to pull off the whole 'decent into darkness' thing, and I'm glad that the showrunners are finally giving her the opportunity to shine with it. Similarly, I really like the direction the writers are taking towards Iris West this season too, expanding her character's personality and giving her a more active role on the show. I also hope we get to see more of the 'intrepid reporter' Iris West in the future, and, you know, maybe if we bribe someone high up there at Warner Bros we'll see an Iris West / Lois Lane team up.

Julian Albert and Barry's arc this episode supplied depth to Gustin's Flash as much as Tom Felton's character, developing Barry's heroic qualities alongside Julian's. Considering the large possibility that Julian Albert (or at least his doppelganger) is Doctor Alchemy, I'm glad the writers aren't going to take the 'easy way out' by making Julian a clear cut bad guy on both earths. Additionally, I think the most effective thing about this episode was the fact that the writers didn't just bullsh*t some drama for this episode by pulling it out of a hat - Julian's bitterness towards metahumans raised both a valid point and a relatable point about jealousy, disillusionment in the human race and the feeling of being unable to doing anything about it. What makes episode like this in a superhero TV series so effective is that even though the audience can never understand what it feels like to be in that kind of world, they relate to the character's struggles because they reflect their own issues. The Flash season three has a handle on that concept, and I hate to jinx it so early into the season, but something tells me this is going to be the best season of the Flash yet.

As for any negative aspects of this episode, the only real drag came from the unexpected individual who had been operating the Central city monster (because I feel like a teenager wouldn't have access to the technology to do that). But with that being said, I still really like the overall message associated with the kid's monster and as cheesy as this sounds, I thought that Joe's talk with him at the end sent a good message to kids watching the show. It was inspiring and cute.

All up, this was another great Zack Stentz episode. In my opinion, the guy's a legend and I hope he stays writing for the show.

+ Monster motif

+ Caitlin and her mum / leading up to Killer Frost

+ Barry and Julian friendship

+ 'HR Wells'. I see what you did there. Bhahah.

+ great writing all around

-'villain' reveal came out of nowhere


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