The Flash (2019) – Season 5 Episode 21:
The Girl With The Red Lightning


Watch The Flash Season 5 Episode 21 (May 07, 2019) – "The Girl With The Red Lightning" online

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The Flash Season 5 Episode 21 (May 07, 2019) – "The Girl With The Red Lightning"

After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super speed. Teaming up with S.T.A.R. Labs, Barry takes on the persona of The Flash, the Fastest Man Alive, to protect his city.

Episode 21 of The Flash Season 5, titled "The Girl With The Red Lightning", originally aired on May 07, 2019, marks a significant turning point in the ongoing narrative. This episode masterfully blends emotional intensity with plot development, offering a viewing experience that is both immersive and thought-provoking.

The episode begins with a gripping introduction that instantly hooks the audience. Through atmospheric visuals and a hauntingly beautiful score, the opening sequence sets a tone of mystery and urgency. Key characters face difficult decisions, unveiling new aspects of their personalities. The writing is sharp, the pacing deliberate, and every moment feels earned.

Midway through, the tension escalates. A critical conflict drives the characters into uncharted emotional territory. The interplay between performance and direction is striking—close-up shots, silences, and subtle gestures convey volumes. This is where the episode shines, inviting deep reflection on themes like identity, morality, and consequence.

As the episode nears its conclusion, the stakes rise even higher. Unexpected twists, moral dilemmas, and layered revelations lead to a memorable finale. Fans will appreciate how this episode builds upon prior events while setting up intriguing possibilities. Technically, it’s a showcase of tight editing, production design, and resonant scoring.

Whether you're a long-time fan or a new viewer, this episode 21 of The Flash Season 5 delivers a compelling experience. With its blend of drama, tension, and emotional depth, "The Girl With The Red Lightning" stands out as a pivotal installment—one worthy of multiple viewings and in-depth discussion.

The Flash Season 5 Episode 21 - The Girl With The Red Lightning (2019)
6.7/10 from 14 votes
Title The Flash
Genre Drama, Sci-Fi & Fantasy
Air Date2019-05-07
Season5
Episode21
Overview After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super speed. Teaming up with S.T.A.R. Labs, Barry takes on the persona of The Flash, the Fastest Man Alive, to protect his city.
Stars
  • Grant Gustin (Barry Allen / The Flash)
  • Candice Patton (Iris West-Allen)
  • Danielle Panabaker (Dr. Caitlin Snow / Killer Frost)
  • Danielle Nicolet (Cecile Horton)
  • Carlos Valdes (Cisco Ramon / Vibe)
  • Hartley Sawyer (Ralph Dibny / Elongated Man)
  • Jesse L. Martin (Joe West)
  • Jessica Parker Kennedy (Nora West-Allen / XS)
  • Tom Cavanagh (Harrison 'Sherloque' Wells)
Subtitles Arabic, Basque, Catalan, Croatian, Czech, Danish, Dutch, English, Filipino, Finnish, French, French Canadian, Galician, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Romanian, Russian, Simplified Chinese and Traditional Chinese, Spanish, Swedish, Tamil, Thai, Turkish, Ukrainian and Vietnamese.

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 Andrew MillerRating: 9.4/10
2025-06-26 — Season 8, Episode 32

Every episode is filled with tension and depth.

 David BrownRating: 9.5/10
2025-07-03 — Season 1, Episode 49

A powerful and well-written show tackling complex themes.

 Andrew MillerRating: 9.2/10
2025-06-19 — Season 1, Episode 46

An emotional rollercoaster with meaningful relationships.

 Andrew MillerRating: 9.5/10
2025-06-23 — Season 1, Episode 10

Great production quality and immersive cinematography that develops over time.

 Emily JohnsonRating: 9.1/10
2025-07-02 — Season 2, Episode 43

Well-rounded, emotional, and beautifully shot series.

 Sophia MartinezRating: 8.9/10
2025-07-11 — Season 3, Episode 42

Every episode is filled with tension and depth.

 Robert EvansRating: 9.3/10
2025-06-28 — Season 4, Episode 11

A masterclass in storytelling and emotional depth.

 Sarah ParkerRating: 9.5/10
2025-07-16 — Season 5, Episode 24

A masterclass in storytelling and emotional depth.

 James ThompsonRating: 8.9/10
2025-06-22 — Season 1, Episode 36

An emotional rollercoaster with meaningful relationships.

 Natalie WilsonRating: 9.1/10
2025-07-15 — Season 1, Episode 9

An emotional rollercoaster with meaningful relationships.

 Andrew MillerRating: 8.8/10
2025-07-10 — Season 8, Episode 3

Sharp writing and phenomenal ensemble performances.

 David BrownRating: 8.7/10
2025-07-12 — Season 2, Episode 18

An outstanding TV series with deep emotional storytelling, brilliant acting, and twists that keep you coming back.

 Grace HallRating: 8.6/10
2025-06-26 — Season 3, Episode 1

Top-notch cinematography and well-paced story arcs.

 David BrownRating: 8.6/10
2025-07-14 — Season 8, Episode 43

An outstanding TV series with deep emotional storytelling, brilliant acting, and twists that keep you coming back.

 Emily JohnsonRating: 9.5/10
2025-07-02 — Season 6, Episode 5

Perfect blend of drama, suspense, and character development.

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