The Best Episodes of Zero Day

Episode Rankings

1. #1 Fan Favorite
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   7.6/10(1860 votes)

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   #1 - Episode 6

   S1:E62/20/2025

   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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   Director:Lesli Linka Glatter

   Writers:Noah Oppenheim, Eric Newman
2. 

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   7.6/10(1767 votes)

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   #2 - Episode 5

   S1:E52/20/2025

   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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   Director:Lesli Linka Glatter

   Writer:Dee Johnson
3. 

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   7.3/10(1783 votes)

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   #3 - Episode 4

   S1:E42/20/2025

   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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   Director:Lesli Linka Glatter

   Writer:Eli Attie
4. 

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   7.2/10(1854 votes)

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   #4 - Episode 3

   S1:E32/20/2025

   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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   Director:Lesli Linka Glatter

   Writer:Roberto Patino
5. 

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   7.2/10(2359 votes)

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   #5 - Episode 1

   S1:E12/20/2025

   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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   Director:Lesli Linka Glatter

   Writer:Unknown
6. 

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   7.1/10(2008 votes)

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   #6 - Episode 2

   S1:E22/20/2025

   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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   Director:Lesli Linka Glatter

   Writers:Noah Oppenheim, Eric Newman
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