Life on Mars - Season 2 Episode 8 Is he mad, in a coma… or has Detective Sam Tyler really travelled back in time?
Overview: Sam learns that an operation is to be conducted on him in 2006 to try and revive him from his coma. However, he believes that to return to the twenty-first century, he has to betray his colleagues in 1973 - but can he regard them as real or imagined?