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TV show · sci-fi & fantasy, comedy

Code 404

2020–2022 · 3 seasons, 18 episodes · canceled

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Seasons and episodes Code 404

Season scores: TMDB, out of 10.

Season 1

2020 · 6 episodes · about 3h · 7.2/10

Still: Episode 11. Episode 125 min · 7.0/10

Top cop John Major is killed after a failed operation. But then the Met brings him back - as an AI prototype.

Still: Episode 22. Episode 225 min · 7.5/10

Major screws up during an investigation and Carver wonders whether to turn him in. But when he learns of the consequences, he decides to cover for him.

Still: Episode 33. Episode 325 min · 7.5/10

After he and Carver are given a new assignment by Dennett, a suspicious Major prefers to stake out Kelly's work as he has a hunch she's been seeing someone else.

Still: Episode 44. Episode 425 min · 7.0/10

The pressure is on in the latest assignment and failure could mean it's shutdown for Major once and for all...

Still: Episode 55. Episode 525 min · 7.0/10

To Carver's bewilderment, Major reveals that he is going to move back in with Kelly. Parfit discovers disturbing information in the AI Ethics files.

Still: Episode 66. Episode 625 min · 7.0/10

With Major's AI finally living up to the hype, Carver and Kelly come clean about their relationship. The team lies in wait to catch The Juggler.

Season summaries3 seasons, 6 episodes each

Season 1

2020 · 6 episodes · about 3h · TMDB 7.2

John Major had it all: wife, best friend, glittering career in the police force... when his cover was blown and he met an untimely death. One year later, he's back - part AI and better than ever... or so he'd like to believe. Full of glitches, he's got to track down the person who shot him, prove himself as a cop so as not to get shut down, save his marriage and his friendship with his partner to boot.

Season 2

2021 · 6 episodes · TMDB 7.0

Having cracked The Juggler case with his long-suffering partner, the resurrected DI Major has finally reached his potential as the top cop in the SIU. But it came at a price. At last realising that his best friend had shacked up with his wife Kelly while he was “away” (and a bit before), their partnership is over, and the pair go their own ways. But when a 20-year old cold case is reopened, the pair find themselves back together and thrown into the action. With an impending divorce, the return of his long-time absentee dad, and danger around every corner, the pressure seems to be getting to Major and he starts exhibiting strange behavioural glitches. However, much to Carver’s concern, the problems are more serious than a typical reboot can solve, and our cyborg hero may be looking at terminal failure.

Season 3

2022 · 6 episodes · TMDB 7.2

On limited duties pending an investigation into their last case, Detective Inspectors Major and Carver find themselves at an all-time low. So, when one of their own within SIU is murdered, Major and Carver become hellbent on solving the case and proving their worth. But it’s bigger than they thought... They discover they’re dealing with a twisted serial killer whose sights are now set on them. With lives at stake, they need to work together, but tensions run high and fractures in their partnership begin to worsen. Can they hunt them down before it’s too late?

Episodes run about 25 min. Last episode: August 18, 2022

Is it worth watching? Code 404

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Reception

On other sites

  • TMDB6.6/10141 votes

What is it about? Code 404

In the near future, an undercover Detective Inspector gunned down and killed during a botched sting is brought back via an experimental Artificial Intelligence project. Full of glitches, he’s got to track down the person who shot him, prove himself as a cop so as not to get shut down, and save his marriage and his friendship, all with his partner Carver to boot.

Genres: sci-fi & fantasy, comedy, crime. Themes: artificial intelligence (a.i.), police, cyborg cop.

Cast and crew Code 404

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Creators

Full cast14 cast members across all seasons

Cast:

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Details Code 404

Poster: Code 404
First episode
April 29, 2020
Last episode
August 18, 2022
Status
canceled
Network
Sky One
Country
United Kingdom
Original language
English
Studios
Water & Power Productions, Kudos

Frequently asked questions

How many seasons does Code 404 have?

3 seasons, 18 episodes. The last episode aired August 18, 2022.

Who’s in Code 404?

Daniel Mays, Stephen Graham, Anna Maxwell Martin, Amanda Payton, Rosie Cavaliero, Tracy-Ann Oberman, Steve Oram, Emily Lloyd-Saini, Meera Syal, and Precious Mustapha. Created by Sam Myer.

Sources: TMDB (title data, images). As of November 13, 2026. This product uses the TMDB API but is not endorsed or certified by TMDB. · Ta strona po polsku