The Flash (2014– )
9.4/10
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33 user 5 critic

What's Past Is Prologue 

In the 100th episode, Barry and Team Flash come up with a plan to stop Cicada. However, the plan calls for Barry and Nora to travel back in time to gather some key necessities. Meanwhile, ... See full summary »

Director:

Tom Cavanagh

Writers:

Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 8 more credits »
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From $1.99 (SD) on Prime Video

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Cast

Episode cast overview, first billed only:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West-Allen
Danielle Panabaker ... Caitlin Snow / Killer Frost
Carlos Valdes ... Cisco Ramon / Vibe
Hartley Sawyer ... Ralph Dibny / Elongated Man
Jessica Parker Kennedy ... Nora West-Allen / XS
Chris Klein ... Orlin Dwyer / Cicada
Tom Cavanagh ... Sherloque Wells / Dr. Harry Wells / Dr. Harrison Wells / Eobard Thawne
Jesse L. Martin ... Joe West (archive footage) (credit only)
LaMonica Garrett ... Mar Novu / The Monitor
Michelle Harrison ... Nora Allen
John Wesley Shipp ... Henry Allen / The Flash
Teddy Sears ... Hunter Zolomon / Zoom
Tony Todd ... Zoom (voice)
Lossen Chambers ... Doctor Ambres
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Storyline

In the 100th episode, Barry and Team Flash come up with a plan to stop Cicada. However, the plan calls for Barry and Nora to travel back in time to gather some key necessities. Meanwhile, Sherloque's suspicions about Nora continue to grow.

Plot Summary | Add Synopsis


Certificate:

TV-PG
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Details

Country:

USA

Language:

English

Release Date:

4 December 2018 (USA) See more »

Also Known As:

What's Past Is Prologue See more »

Filming Locations:

British Columbia, Canada See more »

Company Credits

Show more on IMDbPro »

Technical Specs

Runtime:

Sound Mix:

Stereo

Color:

Color

Aspect Ratio:

16:9 HD
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Did You Know?

Trivia

The episode's title is a reference to an infamous line from the William Shakespeare play The Tempest. See more »

Goofs

When Iris shot and killed Savitar in The Flash: Finish Line, he was laying face up; in this episode, he's face down. See more »

Quotes

Gideon: Good evening, Barry Allen. I was not expecting you this soon.
Nora West-Allen: She knows you?
Gideon: I know you as well, Nora West-Allen. Also known as XS.
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Soundtracks

Back in Time
(uncredited)
Performed by Huey Lewis & The News
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User Reviews

 
100th episode and one of the best
5 December 2018 | by Holt344See all my reviews

Right the second Ralph put on Back in Time I knew I would enjoy this episode, time travel have always been my favorite power with The Flash and here we get a whole episode with that. I enjoyed all the events that they traveled to, Eobard Thawne was the most interesting and epic but everything about the episode was epic. It has to be one of the best The Flash episodes, everything was just perfect.

Tom Cavanagh third time directing an episode and also his best, showing off true talent. He's also one hell of a good actor, it's interesting to see him act with all the different characters. Jessica Parker Kennedy is also a great addition to the cast, she makes Nora interesting and has great chemistry with the others. I really like what they got in store for her, seems like a great story arc.


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