The Flash (2018) – Season 4 Episode 21:
Harry and the Harrisons


Watch The Flash Season 4 Episode 21 (May 08, 2018) – "Harry and the Harrisons" online

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The Flash Season 4 Episode 21 (May 08, 2018) – "Harry and the Harrisons"

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 4, titled "Harry and the Harrisons", originally aired on May 08, 2018, 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 4 delivers a compelling experience. With its blend of drama, tension, and emotional depth, "Harry and the Harrisons" stands out as a pivotal installment—one worthy of multiple viewings and in-depth discussion.

The Flash Season 4 Episode 21 - Harry and the Harrisons (2018)
6.5/10 from 22 votes
Title The Flash
Genre Drama, Sci-Fi & Fantasy
Air Date2018-05-08
Season4
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)
  • Carlos Valdes (Cisco Ramon / Vibe)
  • Tom Cavanagh (Harrison 'Harry' Wells)
  • Jesse L. Martin (Joe West)
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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 Lisa CarterRating: 9/10
2025-06-24 — Season 2, Episode 14

Every episode is filled with tension and depth.

 Mark DavisRating: 9/10
2025-07-01 — Season 5, Episode 18

A powerful and well-written show tackling complex themes.

 Daniel WrightRating: 9/10
2025-06-18 — Season 5, Episode 35

An emotional rollercoaster with meaningful relationships.

 Grace HallRating: 9.4/10
2025-07-12 — Season 10, Episode 37

A powerful and well-written show tackling complex themes.

 Mark DavisRating: 9.1/10
2025-07-11 — Season 3, Episode 21

An emotional rollercoaster with meaningful relationships.

 Natalie WilsonRating: 9.3/10
2025-07-05 — Season 7, Episode 41

A masterclass in storytelling and emotional depth.

 Sarah ParkerRating: 9.1/10
2025-06-29 — Season 4, Episode 16

Every episode is filled with tension and depth.

 Robert EvansRating: 8.8/10
2025-07-11 — Season 8, Episode 13

An emotional rollercoaster with meaningful relationships.

 Sophia MartinezRating: 9.2/10
2025-07-15 — Season 7, Episode 5

Every season adds layers to a deep narrative.

 James ThompsonRating: 9/10
2025-06-26 — Season 3, Episode 1

A thrilling journey with complex characters...

 Amanda ScottRating: 9.1/10
2025-06-19 — Season 9, Episode 40

An emotional rollercoaster with meaningful relationships.

 Natalie WilsonRating: 9.2/10
2025-06-30 — Season 10, Episode 24

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

 Amanda ScottRating: 8.5/10
2025-07-11 — Season 2, Episode 47

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

 Natalie WilsonRating: 9.4/10
2025-06-19 — Season 8, Episode 33

Fantastic cast and direction that dives into characters.

 Daniel WrightRating: 8.5/10
2025-07-16 — Season 6, Episode 21

Great production quality and immersive cinematography that develops over time.

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