The Flash (2014– )
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What's Past Is Prologue 

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 ... See full summary »

Director:

Tom Cavanagh

Writers:

Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 8 more credits »
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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 ... Dr. Vanessa Ambres
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Storyline

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 | See all certifications »
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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

When Harrison Wells/Eobard Thawne is trying to guess who Nora is, he rattles of the following names: Jessie Chambers, Libby Lawrence and Danica Williams. In the comics, Chambers is the heroine Jesse Quick who, in this TV series is actually Jesse Chambers Wells, the daughter of the Earth-2 Harrison "Harry" Wells. In the comics, Lawrence is the mother of Chambers, as well as being the Golden Age hero Liberty Belle (Chambers would also go on to carry the Liberty Belle mantle). Finally, Williams is the Flash of the 'Beyond' era of DC comics, set some thirty years into the future. 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

Nora West-Allen: What if we could make one?
Barry Allen: Make one what?
Nora West-Allen: What if we can make a weapon more powerful than his weapon? Cicada can control his dagger, so what we would need would be something more powerful than his connection to it.
Iris West-Allen: Wait, like... like some kind of supercharged magnet?
Nora West-Allen: Exactly.
Cisco Ramon: I don't know if we have anything strong enough for that. We made Sally out of a micro-composite alloy. As far as satellites go, she's... she was heavy-duty.
Caitlin Snow: And even if we could get our hands on the dagger, we'd still have...
[...]
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Connections

Edited from The Flash: Finish Line (2017) See more »

Soundtracks

Back in Time
(uncredited)
Performed by Huey Lewis & The News
Additional Production & Remix by Jellybean Benítez
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User Reviews

 
I don't understand...
5 December 2018 | by garabedian123See all my reviews

How can this 100th episode be of so much higher quality and written so much better than any of the CW shows or Flash episodes. I mean wow. Where are they keeping the good writers that they only use every once in a while. This episode raised the bar.


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