The Entire History of You was an episode.
`` The Entire History of You '' is the third episode of the first series of British science fiction anthology series Black Mirror . It was written by the creator of Peep Show and Fresh Meat , Jesse Armstrong , making it the only episode of the series not written or co-written by creator and showrunner Charlie Brooker . The episode , set in an alternative reality where most people have `` grains '' recording everything they do , see , or hear , and allowing them to play back their memories in front of their eyes or on a screen , tells the story of Liam ( Toby Kebbell ) , a man who starts suspecting that his wife Ffion ( Jodie Whittaker ) might have an affair . In 2013 , Robert Downey , Jr. optioned the episode to potentially be made into a film by Warner Bros. and his own production company Team Downey .