We've come so far and now the end is near. The journey that began with Life on Mars concludes as Alex Drake embarks on her final mission: to uncover the truth about Gene Hunt and unlock the dark secrets of this World. Alex is back, only this time it s 1983 and something feels different. The arrival of DCI Jim Keats, sent by Scotland Yard to monitor the station s performance, throws some unexpected light on past events. Haunted by the ghost of a policeman, Alex decides that her only hope in getting home lies in finding out what really happened to Sam Tyler.