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
See full technical specs »
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Did You Know?

Trivia

First episode of the season to feature Jesse L. Martin since News Flash (2018) , even though its only a flashback. See more »

Goofs

Cisco breaches Cicada's dagger into outer-space, even though he's previously stated that he's unable to open breaches that reach into outer-space. However, it's possible that Cisco may have honed his powers enough since then that he can now manage this feat. See more »

Quotes

Sherloque Wells: Look at this code. Have you seen this code before?
Cisco Ramon: Yeah.
Sherloque Wells: Yeah. When?
Cisco Ramon: Right after Barry came out of the Speed Force a year ago.
Sherloque Wells: And did you decipher the code?
Cisco Ramon: Well, my computer did. Just one sentence.
Sherloque Wells: [leaning to look at the monitor] Ahh! Well...
Cisco Ramon: [backing him off] Hey. Listen here, space invader. Why don't you try returning the thing to her and then asking her?
Sherloque Wells: Of course.
Cisco Ramon: Of course.
[...]
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Soundtracks

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