The Flash (2014– )
6 user 8 critic


Zoom unleashes an army of Earth-2 meta-humans, the leader of which is Black Canary's doppelganger, Black Siren; Joe worries when Wally goes out to help The Flash.


Jesse Warn


Greg Berlanti (developed by), Andrew Kreisberg (developed by) | 8 more credits »

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Episode cast overview:
Grant Gustin ... Barry Allen / The Flash
Candice Patton ... Iris West
Danielle Panabaker ... Caitlin Snow / Killer Frost
Carlos Valdes ... Cisco Ramon / Vibe / Reverb
Keiynan Lonsdale ... Wally West
Tom Cavanagh ... Dr. Harry Wells
Jesse L. Martin ... Joe West
Katie Cassidy ... Black Siren
Teddy Sears ... Hunter Zolomon / Zoom
Violett Beane ... Jesse Wells
Amanda Pays ... Dr. Christina McGee
Patrick Sabongui ... Captain David Singh
John Wesley Shipp ... Henry Allen
Rhys Williams ... Man


After Zoom unleashes an army of Earth-2 meta-humans on Central City, Barry is shaken when he sees their leader is the Black Canary's Earth-2 doppelganger, the Black Siren. Meanwhile, Wally takes to the streets to help The Flash stop the meta-humans, which worries Joe. Iris and Henry are concerned about Barry taking on Zoom.

Plot Summary | Add Synopsis


TV-PG | See all certifications »






Release Date:

17 May 2016 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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Did You Know?


At 36:30 the woman talking on her mobile once again passes in front of Central City PD as she does in almost every episode. See more »


After Black Canary unleashed a sonic scream to incapacitate The Flash, the scene switches from an on-the-streets view of the confrontation back to STAR Labs, where on the computer screen data about her attack is recorded. At the top of the screen, "250 DB" reads, indicating that the loudness of her scream was 250 decibels; however, the loudest theoretical sound that could be observed or recorded is 194 decibels. For practical measurements, past around 170 the scale for loudness falls apart; measurements this high only reflect energy, not loudness as the vibrations become more of a shock wave rather than an observable sound. At 250 decibels, the amount of energy for this sound is approximately equivalent to the explosive power of the atomic bomb dropped on Hiroshima. See more »


Cisco Ramon: [after getting a vibe from Earth-2] Birds. Why? It's like a Hitchcock movie in my head.
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References Bye Bye Birdie (1963) See more »


Performed by The Lumineers
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User Reviews

"You're not invincible"
18 May 2016 | by SpoodermanDerpSee all my reviews

"Invincible" comes out right after the emotional ride of "Runaway Dinosaur", at the start it seemed like it felt like a huge scale episode, it ended up exploring on Barry's character even after he already went to the speed force development plot line. The episode is also quite fast paced as the finale now nears its premiere and all the drama and action are now escalating.

In the episode, Barry starts out feeling over confident after his speed force experience. It felt like it was quite relevant given the circumstances the episode presented, but then again it felt kind of useless considering Barry was already given so much closure and development in the last episode already. It was nice that it was shown that Barry was now a completely different guy after the speed force, but it wasn't really fleshed out how him being more optimistic and encouraging was a sign that he was losing fear and the episode tried so hard to explain that fear was a good thing. In the end, and most especially in the end, we finally got the pay-off and consequences to Barry's actions and it was quite heartbreaking. Wally also has a subplot once again about wanting to help in the Metapocalypse and of course a set up for next episode as it is the season finale. The seemed average at best and does well at setting it all up. However the revelations done in the episode with missed opportunities. For example, there wasn't a real shocker to Zoom after finding out that Barry and The Flash is now back, the "Metapocalypse" didn't really seem all that large scale except at the beginning of the episode and Black Siren was just there for the sake of being there. The CGI and action however was for slow-mo type scenes and sadly, it just made one scene in particular look a whole lot artificial and seemed like a video game. Nonetheless, it's the ending which most people are talking about in this episode and it's quite well deserved. The way it was handled was quite unexpected just as you thought they wound end at a certain point, it goes on and further erupts. It was devastating, all the more considering last episode's story line and it probably is the push Barry needs for the season finale.

Verdict: 8.5/10

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