
Episode 1
Episode 1
Top cop John Major is killed after a failed operation. But then the Met brings him back - as an AI prototype.
Where to watch Code 404
TV series
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.
Watch trailerAvailability
Checked Jul 22, 2026
Code 404 premiered April 29, 2020. We don't have a confirmed streaming, rental or purchase option yet.
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.
Cast, crew and production details
Daniel MaysDI John Major
Stephen GrahamDI Roy Carver
Anna Maxwell MartinKelly
Amanda PaytonDr. Parfit
Rosie CavalieroSuperintendent Dennett
Tracy-Ann ObermanPolice Commissioner Chalmers
Steve OramGilbert
Emily Lloyd-SainiRyleWatch options above are for the show and may vary by season or episode.

Episode 1
Top cop John Major is killed after a failed operation. But then the Met brings him back - as an AI prototype.
Where to watch Code 404
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.
Where to watch Code 404
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.
Where to watch Code 404
Episode 4
The pressure is on in the latest assignment and failure could mean it's shutdown for Major once and for all...
Where to watch Code 404
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.
Where to watch Code 404
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.
Where to watch Code 404Episode information updated Jul 22, 2026
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