The BEST episodes of Zero Day season 1

Every episode of Zero Day season 1, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Zero Day season 1!

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.

Last Updated: 3/5/2025Network: NetflixStatus: Ended

7.63

396 votes

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

7.61

404 votes

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

7.41

459 votes

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

7.39

421 votes

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

7.36

537 votes

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

7.33

663 votes

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