The Flash (2014– )
16 user 10 critic

Therefore I Am 

Barry comes face to face with DeVoe, whose past is revealed through flashbacks.


David McWhirter


Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 3 more credits »




Episode cast overview:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West
Danielle Panabaker ... Caitlin Snow
Carlos Valdes ... Cisco Ramon
Keiynan Lonsdale ... Wally West
Neil Sandilands ... Clifford DeVoe / The Thinker
Tom Cavanagh ... Dr. Harry Wells / Dr. Harrison Wells
Jesse L. Martin ... Joe West
Patrick Sabongui ... Captain David Singh
Kim Engelbrecht ... Marlize DeVoe / The Mechanic
Paul Batten Paul Batten ... Dr. Ortiz
Rob Compton Rob Compton ... Police Officer #1
Tiffani Timms ... Reporter #1


Barry comes face to face with DeVoe, whose past is revealed through flashbacks.

Plot Summary | Add Synopsis


TV-PG | See all certifications »

Did You Know?


At 29:38 the same woman with a cellphone to her left ear is descending the steps of the Central City Police Department as she has done in every season of the Flash. This video clip has been reused more than any other in the entire series to date. See more »


During the flashback scene where Harrison Wells speaks to the public about the startup of the Particle Accelerator, there is a single frame out of sequence as it cuts from a two shot with Barry Allen and Iris West back to Harrison Wells. See more »


Barry Allen: Ever since I came back from the Speed Force, I have been constantly and genuinely happy. My friends are safe. Joe's gonna be a dad again. And next week, I get to marry the love of my life. I have nothing more to lose now than ever before.
Iris West: Yeah, but what about when Cecile has the baby? Or after we get married, or even when we have our first child? You know as times goes by, there's even gonna be more for us to lose. And people are always going to come after us. You can't let that consume you, you...
See more »


Edited into The Flash: What's Past Is Prologue (2018) See more »


Piano Concerto No.23 in A Major, K.488: III. Allegro assai
Performed by Allegro assai
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User Reviews

Best of this season yet
22 November 2017 | by caravindan1994See all my reviews

We all have to admit that this episode was the one we all were looking for right from the start of this season. Interactions between DeVoe and Barry were well directed and the dialogues were on point. Though we did come to know how DeVoe is who he is we don't know why he's taking on the Flash.

Coming to the negatives, the team doesn't trust Barry after everything they've been through in the last 3 seasons. Iris calling the shots in each and every episode is pathetic and she's annoying in this episode wherever she takes up screen-space. To be honest, other than being the love interest of Barry she has no point in being in the team. Making her the central focus is just annoying to most people. Instead they could focus on Cisco, Harry, Caitlin who are a major part of Team Flash.

9/10 . Scope for a 10 in future with episodes such as this.

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Release Date:

21 November 2017 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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