Anna Maxwell Martin, Daniel Mays and Stephen Graham star in Sky’s hit comedy about a new type of cop.   DI John Major (Daniel Mays) had it all: wife Kelly (Anna Maxwell Martin), best friend and police partner Carver (Stephen Graham), a glittering career in the police force… when his cover was blown and he met an untimely death. One year later, he’s back - part A.I. 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, and save his marriage and his friendship, all with his partner Carver to boot.