The WORST episodes of Zero Day

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

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

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.

7.36

537 votes

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

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.

7.41

459 votes

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

7.61

404 votes

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

7.63

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.