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Series

Zero Day

2025Unknown runtime7.0 / 101 seasons

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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Available in US

Where To Watch

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Season guide

Limited Series

6 episodes available

Episode 1: Episode 1

50m

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

Episode 2: Episode 2

59m

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

Episode 3: Episode 3

51m

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

Episode 4: Episode 4

54m

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

On screen

Cast & Characters

Robert De Niro

President George Mullen

Jesse Plemons

Roger Carlson

Lizzy Caplan

Alexandra Mullen

Connie Britton

Valerie Whitesell

Joan Allen

Sheila Mullen

Bill Camp

CIA Director Jeremy Lasch

Dan Stevens

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Episode 5: Episode 5

44m

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

Episode 6: Episode 6

54m

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

Evan Green

McKinley Belcher III

Carl Otieno

Matthew Modine

Richard Dreyer

Angela Bassett

President Evelyn Mitchell