The Flash (2014– )
18 user 18 critic

Fast Enough 

With the Particle Accelerator back online, Barry can go back in time to stop Eobard Thawne on the night of his mother's murder fifteen years ago.


Dermott Downs


Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 6 more credits »

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Episode cast overview, first billed only:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West
Danielle Panabaker ... Caitlin Snow
Rick Cosnett ... Detective Eddie Thawne
Carlos Valdes ... Cisco Ramon
Tom Cavanagh ... Dr. Harrison Wells / Reverse-Flash
Jesse L. Martin ... Joe West
Victor Garber ... Dr. Martin Stein
Wentworth Miller ... Leonard Snart / Captain Cold
Matt Letscher ... Eobard Thawne / Reverse-Flash
Robbie Amell ... Ronnie Raymond / Firestorm
Michelle Harrison ... Nora Allen
Patrick Sabongui ... Captain David Singh
John Wesley Shipp ... Henry Allen
Ciara Renée ... Kendra Saunders (as Ciara Renee)


Now incarcerated, Dr. Wells (Eobard Thawne) proposes a plan: use the awakened Particle Accelerator to create a stable worm hole that'll grant Barry and himself each their deepest desires, respectively a living mother and a 22nd century return trip home. The risks are great. Tampering with time will cause permanent and unpredictable changes, let alone a chance at mistakenly spawning a black hole on Earth. In the meantime, Wells suspects that Cisco might be a meta-human, and Eddie (apprised of his rather unique, coincidental position) fulfills a personal wish. Written by statmanjeff

Plot Summary | Plot Synopsis


TV-PG | See all certifications »






Release Date:

19 May 2015 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

16:9 HD
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Did You Know?


Martin Stein says that he feels like he should say something like Eureka or Excelsior, referencing the popular phrase said by Stan Lee. See more »


When Dr. Stein is explaining the time travel calculations, he says they will "inject a hydrogen proton into the particle accelerator." Protons are the same, regardless of the element they come from. A hydrogen proton is the same as an oxygen proton or an iron proton or a plutonium proton. Elements are differentiated (partially) by the number of protons they have. Hydrogen has 1, oxygen had 8, etc. The subatomic particles are the same, so the phrase "hydrogen proton" is somewhat meaningless; however, In Particle Physics, hydrogen atoms are delivered in "packets" into the first stage of the accelerator (Linear Accelerator). These hydrogen atoms can only be used after their electrons are stripped away, leaving hydrogen protons. This is why they are known as hydrogen protons, and not simply protons. See more »


Eobard Thawne: [last words] I've controlled your life for so long, Barry. How will you get along without me?
See more »


References Austin Powers: International Man of Mystery (1997) See more »


The Flash Theme Song
by Blake Neely
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Frequently Asked Questions

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User Reviews

So Dope
19 May 2015 | by gceorge47See all my reviews

This episode had everything: action, intrigue, some sadness, romance, and a cliffhanger that will keep me stranded on that cliff for a whole summer. Many episodes do achieve the action and the emotion, but this episode went above and beyond. I felt like a had the speed in me when watching this specific episode. It made me cry at one point. It made me feel some emotions that I didn't even know I could feel. The Flash show has never let me down, but in this episode, it did the complete opposite, it somehow brought me up. With the teasers it gave, that enormous cliffhanger, and more, this show and this particular episode has changed everything. This is the greatest Superhero TV show ever. And what brings me even more happiness is that this is only the first season, the show can blossom into one of the greatest shows in our generation. And it is because of this episode that carried it so much. Marvel may have the upper hand when it comes to movies, but DC reigns supreme at Television and to be specific on how it got there, The Flash ran to the finish line and made its mark in Television History. Bravo Flash, you are Fast Enough.

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