The Flash (2014– )
14 user 11 critic

I Know Who You Are 

Team Flash meets a scientist who may be the key to stopping Savitar, but is forced into a battle with Killer Frost.


Hanelle M. Culpepper (as Hanelle Culpepper)


Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 5 more credits »

Watch Now

From $0.99 on Prime Video




Episode cast overview:
Grant Gustin ... Barry Allen / The Flash / Savitar
Candice Patton ... Iris West
Danielle Panabaker ... Killer Frost
Carlos Valdes ... Cisco Ramon / Vibe
Keiynan Lonsdale ... Wally West
Tom Cavanagh ... H.R. Wells
Jesse L. Martin ... Joe West
Tom Felton ... Julian Albert
Anne Dudek ... Tracy Brand
Danielle Nicolet ... Cecille Horton
Andre Tricoteux ... Savitar


Barry and the team meet Tracy Brand, a scientist, who may be the key to stopping Savitar. Unfortunately, Killer Frost is also after Tracy so Team Flash must battle their old friend, which proves to be particularly difficult for Cisco. Joe and Cecile's relationship takes a big turn. Written by sarah_l91

Plot Summary | Add Synopsis


TV-PG | See all certifications »






Release Date:

2 May 2017 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
See full technical specs »

Did You Know?


The building used to represent the exterior of the college where Team Flash finds Tracy Brand (Anne Dudek) is Thompson Hall, at the University of New Hampshire, which mostly houses administrative offices. See more »


Barry Allen: You can't give up. Your work on relatistic quantum mechanics and its application to inter-spatial theory to manipulate matter on a subatomic level, it's groundbreaking.
Tracy Brand: I haven't shared that hypothesis with anyone, other than my therapist. Who are you?
H.R. Wells: We're therapists.
See more »


References Terminator 2: Judgment Day (1991) See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

The Future Flash
2 May 2017 | by ThomasDrufkeSee all my reviews

So, we finally found out who's underneath the mask and armor of Savitar, the god of speed. Was it all worth it?

I don't know. On one hand, the reveal of having future Barry probably would have been more interesting if it was revealed earlier in the season. I understand they were going for a different approach considering we knew who the villains of season 1 and 2 were a whole lot earlier, but this felt weirder than it should have. I actually am a fan of the concept on paper. The idea of having Barry being the villain of the show is intriguing because he does cause a ton of unnecessary chaos while he's speeding around the city. But I really need to hear the reasoning for future Barry turning evil before I make my ultimate decision either way.

It's also interesting to think about whether or not this was always the plan from the beginning. Think about it, Savitar was once an all CGI-being without any real sign of practical effects. But mid- way though the season that was changed for a blend of CGI and a practical suit. Could it be that the show-runners once never planned on having anyone underneath the suit and then changed it to a more approachable looking appearance once they decided on Barry? I don't necessarily believe this is the case, but it doesn't totally make sense why the change was made.

Either way, the decision to have a future version of Barry is sure to be one of controversy. Ultimately, the explanation may line up with what this season has presented us. We saw Barry create flashpoint in the beginning of the season (in turn creating Savitar). Could it be that Savitar is the version of Barry that was supposed to exist if it wasn't for Barry shifting the timeline in the first place? Perhaps then, I would find the twist worth it.

It's funny, the reveal only took up a few minutes of screen time but I find myself talking about it more than the actual episode itself. Most of the episode dealt with the aftermath of having Killer Frost on the loose and Savitar's "plans" for her. The damsel in distress this week was Cecile, Joe's newly found love. If I'm being honest, I really didn't care for any of the episode aside from the ending reveal. It all felt like screen time being used up until the big reveal. The only thing that really stuck out to me was Wally's absence. That just felt like a complete copout to not have one of the two speedsters not on the same earth when Savitar and Killer Frost are still at large. But his absence really just made it more and more obvious that Wally wasn't going to be Savitar after all. And really, I guess there was never any real reasoning for him being the "Future Flash" anyway. Overall, I have a hard time commenting on my feelings for this episode without hearing the reasoning behind the big reveal, but it will sure to be something to get everyone talking.

+Ballsy reveal

-But is it ultimately the right move?


13 of 39 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 14 user reviews »

Contribute to This Page

Stream Popular Action and Adventure Titles With Prime Video

Explore popular action and adventure titles available to stream with Prime Video.

Start your free trial

Recently Viewed