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The Best Episodes of The Flash Season 1

Every episode of The Flash Season 1 ranked from best to worst. Discover the Best Episodes of The Flash Season 1!

Binge this in 17h 58m•Peaking at 7.9/10

When a bolt of lightning crashes through a police crime lab, a mix of electrically charged substances bathes chemist Barry Allen, transforming him into the fastest man alive--The Flash.

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Episode Rankings

  1. #1 Fan Favorite
    The Flash Season 1 Episode 14 - Be My Baby
    7.9/10(218 votes)

    S1:E14

    Barry tries to help a young woman. She found out about her husband's criminal life, and is trying to escape from him. She takes their daughter with her, but he wants them back.

    Director:Bruce Bilson
    Writer:Jule Selbo

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  2. The Flash Season 1 Episode 21 - Alpha
    7.9/10(230 votes)

    S1:E21

    An android built by the government to use an assassin refuses to obey her orders. She escapes, and is befriended by Tina and Barry.

    Director:Bruce Bilson
    Writer:Unknown

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  3. The Flash Season 1 Episode 15 - Fast Forward
    7.8/10(221 votes)

    S1:E15

    Jay's killer, Nicholus Pike, is released from jail and blames the Flash for Jay's death. He sets the Flash up by using a heat seeking bomb on him, but something goes awry. Instead of killing the Flash, it sends him into the future where Pike is in charge and outlaws anyone from mentioning the Flash.

    Director:Gus Trikonis
    Writer:Gail Morgan Hickman

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  4. The Flash Season 1 Episode 8 - Shroud of Death
    7.7/10(236 votes)

    S1:E8

    Pieces of a broken medallion are the only clue to an unknown assassin who is on a deadly rampage in central city.

    Director:Mario Azzopardi
    Writer:Unknown

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  5. The Flash Season 1 Episode 11 - Beat the Clock
    7.7/10(239 votes)

    S1:E11

    A jazz musician friend of Julio's is about to be executed. An hour before the execution, a friend calls and says he has evidence that could exonerate their friend. Before Barry can contact him, he disappears. They have less than an hour to save a condemned man.

    Director:Mario Azzopardi
    Writer:Jim Trombetta

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  6. The Flash Season 1 Episode 16 - Deadly Nightshade
    7.7/10(201 votes)

    S1:E16

    There's a new vigilante in town, the Deadly Nightshade, who fights crime by killing criminals. The Flash and the original Nightshade team up to take him down.

    Director:Bruce Bilson
    Writers:Howard Chaykin, John Francis Moore

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  7. The Flash Season 1 Episode 20 - Good Night, Central City
    7.5/10(193 votes)

    S1:E20

    A small time crook gets a hold of a device that puts people to sleep. He goes on a spree while the people are unconscious. He has a plan to knock out the entire city, it's up to the Flash to stop him.

    Director:Mario Azzopardi
    Writer:Jim Trombetta

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  8. The Flash Season 1 Episode 18 - Twin Streaks
    7.3/10(183 votes)

    S1:E18

    A scientist and his business partner are trying to develop a being with super speed, their attempts fail. They manage to clone the Flash. Their creation learns quickly, but is emotional moral equivalent of a child. Barry must stop his twin.

    Director:James A. Contner
    Writer:Stephen Hattman

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  9. The Flash Season 1 Episode 22 - The Trial of the Trickster
    7.3/10(3 votes)

    S1:E22

    With the help of an insane admirer who wants to be his sidekick, the Trickster escapes from police custody and places the Flash under his mind control.

    Director:Danny Bilson
    Writers:Howard Chaykin, John Francis Moore

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  10. The Flash Season 1 Episode 9 - Ghost in the Machine
    7.2/10(204 votes)

    S1:E9

    Barry befriends an African American who was once a super hero that defeated a terrorist called the Ghost, who blackmailed the city through television sets. When the presumed dead criminal is defrosted, the Night Shade is back in business.

    Director:Bruce Bilson
    Writers:Howard Chaykin, John Francis Moore

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  11. The Flash Season 1 Episode 7 - Child's Play
    7.1/10(216 votes)

    S1:E7

    An orphan boy has information that incriminates a 1960s cult figure who is trying to make a comeback.

    Director:Danny Bilson
    Writer:Unknown

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  12. The Flash Season 1 Episode 17 - Captain Cold
    7.1/10(202 votes)

    S1:E17

    Captain Cold, who freezes his victims to death, is contracted to kill the Flash.

    Director:Gilbert M. Shilton
    Writer:Unknown

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  13. The Flash Season 1 Episode 10 - Sight Unseen
    7.0/10(201 votes)

    S1:E10

    An invisible man gets into Star Labs, and releases a neurotoxin with Tina inside the lab. Then he starts killing scientists who worked on the project. Flash must find the invisible man and save his friend.

    Director:Christopher Leitch
    Writer:Unknown

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  14. The Flash Season 1 Episode 19 - Done with Mirrors
    7.0/10(190 votes)

    S1:E19

    A battery is stolen by a criminal calling himself the Mirror Master. He soon steals a crystal from Star Labs. Tina will get fired if they can't recover the crystal. Tina's mother comes for a visit, and an old friend of Barry's also stirs up trouble.

    Director:Danny Bilson
    Writers:Howard Chaykin, John Francis Moore

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  15. The Flash Season 1 Episode 1 - Pilot
    6.9/10(305 votes)

    S1:E1

    A laboratory accident endows a police scientist with the ability to move at superhuman speed which he uses to battle a menacing gang as a superhero.

    Director:Robert Iscove
    Writers:Danny Bilson, Paul De Meo

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  16. The Flash Season 1 Episode 2 - Out of Control
    6.9/10(274 votes)

    S1:E2

    Homeless people are dying and their bodies are disappearing. Tina rekindles a relationship with a former colleague who is an expert in genetic engineering.

    Director:Mario Azzopardi
    Writer:Gail Morgan Hickman

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  17. The Flash Season 1 Episode 3 - Watching the Detectives
    6.9/10(244 votes)

    S1:E3

    The corrupt District Attorney Thomas Castillo hires a private eye named Megan Lockhart to find out the Flash's identity. He then blackmails Barry to work for him, or he'll expose his secret.

    Director:Gus Trikonis
    Writers:Howard Chaykin, John Francis Moore

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  18. The Flash Season 1 Episode 5 - Double Vision
    6.9/10(225 votes)

    S1:E5

    Someone spreads graffiti, and messages asking to meet "Flash" at a church. Barry goes to the church. Shortly after that, he begins to experience black outs and memory losses.

    Director:Gus Trikonis
    Writer:Jim Trombetta

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  19. The Flash Season 1 Episode 12 - The Trickster
    6.9/10(204 votes)

    S1:E12

    Barry must protect his old girlfriend, Megan Lockhart, from an obsessed, maniacal criminal disguised as The Trickster.

    Director:Danny Bilson
    Writers:Howard Chaykin, John Francis Moore

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  20. The Flash Season 1 Episode 6 - Sins of the Father
    6.8/10(234 votes)

    S1:E6

    A bank robber escapes from prison. He goes back to Central City to get his money and revenge on the cop who busted him, Henry Allen, Barry's father.

    Director:Jonathan Sanger
    Writer:Stephen Hattman

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  21. The Flash Season 1 Episode 4 - Honor Among Thieves
    6.6/10(238 votes)

    S1:E4

    While arranging security at the Central City Museum, Barry is reunited with an old girlfriend and a former mentor.

    Director:Aaron Lipstadt
    Writer:Unknown

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  22. The Flash Season 1 Episode 13 - Tina, Is That You?
    6.5/10(201 votes)

    S1:E13

    Barry is having trouble sleeping. Tina tries to use bio-feedback to help him, but it back fires on Tina. She joins a gang, and she's able to hold Flash at bay with her knowledge of his strengths and weaknesses. Barry has got to find a way to save his friend.

    Director:William A. Fraker
    Writer:Unknown

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Season 1 Ratings Summary

"Be My Baby" is the best rated episode of "The Flash" season 1. It scored 7.9/10 based on 218 votes. Directed by Bruce Bilson and written by Jule Selbo, it aired on 2/21/1991. This episode is rated 0.0 points higher than the second-best, "Alpha".