

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.
Release Date
PremieredCode 404 Season 1 released on April 29, 2020.
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Sign In to Track ProgressSeasons
Episode 1
Top cop John Major is killed after a failed operation. But then the Met brings him back - as an AI prototype.
Episode 2
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.
Episode 3
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.
Episode 4
The pressure is on in the latest assignment and failure could mean it's shutdown for Major once and for all...
Episode 5
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.
Episode 6
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.

Latest Trailers and Teasers
UK Series 3 Trailer
Trailer | Sky One
Code 404
Series 1
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.
Release Date
PremieredCode 404 Season 1 released on April 29, 2020.
Your Progress
Track your watching progress by signing in
Sign In to Track ProgressEpisode 1
Top cop John Major is killed after a failed operation. But then the Met brings him back - as an AI prototype.
Episode 2
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.
Episode 3
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.
Episode 4
The pressure is on in the latest assignment and failure could mean it's shutdown for Major once and for all...
Episode 5
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.
Episode 6
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.