Detective Charlie Crews is played bij Damian Lewis. Crews has spent years in prison for a crime he didn't commit. After he comes free he starts his job al detective again. Against the orders in he want to investigate the murder that put him innocent away. Before he can do that there are a few difficulties. Crews mist the start of the 21 century. So he doesn't have a idea about technology,

Detective Dani Reese is played bij Sara Shahi. She is the new partner of Detective Crews. After a slow start it's going better and it becomes a team. She has difficulties dealing with Crews who mist the start of the 21 century and doesn't have a clue about technology.