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6.92025 · Ended1 seasons6 episodesHD · Subtitles

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“Truth has been weaponized.”

About Zero Day

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.

Zero Day runs for 1 season, created by Eric Newman and Noah Oppenheim and Michael S. Schmidt. Every episode page keeps the show's order, so you can watch from the pilot to the finale without hunting for the next link. Episodes are bought individually for 1 credit.

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Episodes

Season 1 · 6 episodes

Episode 1

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

2025-02-20 50m★ 6.7Now playing

Episode 2

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

2025-02-20 59m★ 6.4

Episode 3

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

2025-02-20 51m★ 6.4

Episode 4

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

2025-02-20 54m★ 6.4

Episode 5

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

2025-02-20 44m★ 6.6

Episode 6

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

2025-02-20 54m★ 6.3

Season 1

Zero Day FAQ

How much does it cost to watch Zero Day?

Episodes cost 1 credit each. Credits are $1 each, so a full season costs the number of episodes in credits. Each episode you unlock stays in your account permanently.

Do I need an account to watch Zero Day?

Yes. Create an account and add credits before unlocking an episode. Signing up is free and only needs an email and password.

How many seasons of Zero Day are there?

Zero Day has 1 season on Cineby, with 6 episodes in total. Start with season 1 below.

Where should I start watching Zero Day?

Start with season 1, episode 1. The episode list on this page keeps the order, and the player moves to the next episode when one ends.

Can I watch Zero Day with subtitles on my phone?

Yes. The player includes a CC menu where available, and the whole site is built for mobile. Fullscreen and picture-in-picture are supported.