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The Best Episodes of Zero Day

Every episode of Zero Day ranked from best to worst. Let's dive into the Best Episodes of Zero Day!

Binge this in 5h 12m•Peaking at 7.1/10

A former U.S. President is called out of retirement to find the source of a deadly cyberattack, only to discover a vast web of lies and conspiracies.

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Episode Rankings

  1. #1 Fan Favorite
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    Zero Day Season 1 Episode 1 - Episode 1
    7.1/10(2268 votes)

    #1 - Episode 1

    S1:E1

    Former President George Mullen's comfortable retirement is upended after he's asked to lead an investigation into a horrific cyberattack.

    Director:Lesli Linka Glatter
    Writer:Unknown

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  2. Zero Day Season 1 Episode 5 - Episode 5
    7.0/10(1700 votes)

    #2 - Episode 5

    S1:E5

    A personal tragedy reopens old wounds for the Mullen family. Speaker Dreyer pushes for a change in leadership. Sheila testifies before Congress.

    Director:Lesli Linka Glatter
    Writer:Dee Johnson

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  3. Zero Day Season 1 Episode 2 - Episode 2
    6.8/10(1931 votes)

    #3 - Episode 2

    S1:E2

    Mullen's commission investigates a hacking ring. President Mitchell weighs retaliation. A powerful figure has demands for Roger.

    Director:Lesli Linka Glatter
    Writers:Noah Oppenheim, Eric Newman

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  4. Zero Day Season 1 Episode 3 - Episode 3
    6.8/10(1783 votes)

    #4 - Episode 3

    S1:E3

    Mullen's initial arrests draw blowback from the public — especially TV pundit Evan Green. Alex faces pressure to investigate her father.

    Director:Lesli Linka Glatter
    Writer:Roberto Patino

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  5. Zero Day Season 1 Episode 4 - Episode 4
    6.8/10(1714 votes)

    #5 - Episode 4

    S1:E4

    A shock to the financial system increases scrutiny on Mullen's commission. Valerie investigates Proteus. Roger must make a difficult choice.

    Director:Lesli Linka Glatter
    Writer:Eli Attie

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  6. Zero Day Season 1 Episode 6 - Episode 6
    6.7/10(1788 votes)

    #6 - Episode 6

    S1:E6

    A new threat creates further unrest across the nation. As he narrows in on the culprit, Mullen is faced with an agonizing decision.

    Director:Lesli Linka Glatter
    Writers:Noah Oppenheim, Eric Newman

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    7. Trending NowTRENDING NOW

    The 20 WORST Episodes of Zero Day

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Best Episodes Summary

"Episode 1" is the best rated episode of "Zero Day". It scored 7.1/10 based on 2268 votes. Directed by Lesli Linka Glatter and written by Unknown, it aired on 2/20/2025. This episode scored 0.1 points higher than the second highest rated, "Episode 5".