The Flash (2014– )
20 user 19 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 »




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 »

Did You Know?


The title "Fast Enough" is a reference to when the Reverse Flash said he wasn't fast enough. 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 Star Wars: Episode IV - A New Hope (1977) See more »


Don't Dream It's Over
Written by Neil Finn
Performed by Crowded House
See more »

User Reviews

Amazing season ending
5 March 2020 | by dami3001See all my reviews

Wow ... this is big. This ending has everything I could want. Barry faces the biggest villain and gets the chance he's dreamed of all his life. The conclusion is epic and leaves us waiting for a new season. Without a doubt, The Flash is a great show.

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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
See full technical specs »

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