All Episodes of Zero Day
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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.
Season 1
7.2/102,345 votesEpisode 1
Season 1 Episode 1 - Aired 2/20/2025
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
7.1/101,996 votesEpisode 2
Season 1 Episode 2 - Aired 2/20/2025
Mullen's commission investigates a hacking ring. President Mitchell weighs retaliation. A powerful figure has demands for Roger.
Director: Lesli Linka Glatter
Writer: Noah Oppenheim, Eric Newman
7.2/101,842 votesEpisode 3
Season 1 Episode 3 - Aired 2/20/2025
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
7.3/101,771 votesEpisode 4
Season 1 Episode 4 - Aired 2/20/2025
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
7.6/101,754 votesEpisode 5
Season 1 Episode 5 - Aired 2/20/2025
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
7.6/101,844 votesEpisode 6
Season 1 Episode 6 - Aired 2/20/2025
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
Writer: Noah Oppenheim, Eric Newman