The Flash (2014– )
8 user 12 critic

Therefore She Is 

Barry and Team Flash team up with Gypsy to try to thwart Thinker's plan. Meanwhile, Cisco and Gypsy have a heart to heart talk about their relationship.


Rob Greenlea (as Rob J. Greenlea)


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


Episode complete credited cast:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West-Allen
Danielle Panabaker ... Caitlin Snow
Carlos Valdes ... Cisco Ramon / Vibe
Neil Sandilands ... Clifford DeVoe / The Thinker
Tom Cavanagh ... Dr. Harry Wells
Jesse L. Martin ... Joe West
Danielle Nicolet ... Cecile Horton
Kim Engelbrecht ... Marlize DeVoe / The Mechanic
Jessica Camacho ... Gypsy
Jessica Parker Kennedy ... Nora West-Allen
Zachary Gulka ... Security Guard
Laura Jaye ... Moderator
Panta Mosleh ... Peace Corps Volunteer
Sean Poague ... Accelerated Man




Barry and Team Flash team up with Gypsy to try to thwart Thinker's plan. Meanwhile, Cisco and Gypsy have a heart to heart talk about their relationship.

Plot Summary | Add Synopsis


TV-PG | See all certifications »

Did You Know?


The episodes title is similar to the earlier season 4 episode Therefore I Am (2017) Similar to that episode, this episode features flashbacks of the DeVoes. See more »


When the DeVoes are moving into their new home Mrs DeVoe opens a book where its written Promulgations of our Future. Unless he is planning to air their future plans to the general masses this is the wrong word which as intelligent as Clifford is he would never use this word wrong. See more »


Barry Allen: I know why you're upset, but it's all right.
Gypsy: Really?
Barry Allen: Yeah. Look, Cisco just thinks if he takes the job, he'll be letting us down. But, I mean, he just needs to follow his own heart, do what he needs to do, not worry about us. He knows that.
Gypsy: Wow. That's actually really great.
Barry Allen: So, now... all you guys have to do is talk to each other.
Gypsy: Yeah. Well, that part's not so easy, so...
Barry Allen: [glancing around] Yes... it is.
Gypsy: What are you doing?
Barry Allen: What?
Gypsy: Don't even think about it.
See more »


References Home Alone (1990) See more »

User Reviews

One of the best episodes in this season
7 May 2018 | by antcharatsSee all my reviews

From episode 15 ''enter the flashline'' Im noticing more and more emotional and meaningful dialogues. I personally would like to see a come back with Ralf to balance Flash cause he seems to carry so much pain into his shoulders.

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Release Date:

1 May 2018 (USA) See more »

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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