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The Best Episodes of Zero Day Season 1

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

Binge this in 5h 12m·Peaking at 7.6/10

Seasons1

Episode Rankings

  1. #1 Fan Favorite
    Zero Day Season 1 Episode 5 - Episode 5
    7.6/10(1756 votes)
    S1:E5

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

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  2. Zero Day Season 1 Episode 6 - Episode 6
    7.6/10(1846 votes)
    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.

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  3. Zero Day Season 1 Episode 4 - Episode 4
    7.3/10(1772 votes)
    S1:E4

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

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  4. Zero Day Season 1 Episode 1 - Episode 1
    7.2/10(2348 votes)
    S1:E1

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

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  5. Zero Day Season 1 Episode 3 - Episode 3
    7.2/10(1843 votes)
    S1:E3

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

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  6. Zero Day Season 1 Episode 2 - Episode 2
    7.1/10(1998 votes)
    S1:E2

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

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    The 20 BEST Episodes of Zero Day

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Season 1 Ratings Summary

"Episode 5" is the best rated episode of Zero Day season 1. It scored 7.6/10 from 1,756 votes. Directed by Lesli Linka Glatter and written by Dee Johnson, it aired on February 20, 2025.