Michael Britten (Jason Isaacs of EVENT HORIZON, SOLDIER) is a police detective who is living two lives--a situation caused by a car accident. In one reality his wife, Hannah (Laura Allen of 4400) is alive and his teenaged son, Rex, is dead. In the other reality Rex is alive but his mother is dead. He switches over from one world to the next when he goes to sleep--at least, at first. When he investigates a case in one world--it often ties, via a clue or two, to a case he's working on in the other. He's also seeing two psychiatrists, who both insist the reality he's currently in is the real one. But Britten insists he wants to exist in both, as it's the only way he can see all of his family again.
There are complications. It's hinted that his car accident was no accident--and his police Captain (Laura Innes of THE EVENT) has something to do with it. Once Britten realizes this--and begins searching for the reason why, we're led to believe that once he solves his own personal case that he'll go back to the "right" reality. But which one will it be?
While it does wrap up the story line of why someone caused the car crash it's never explained why there are two realities--and the last--and final--13th episode doesn't quite bring it all together. Still this is an intriguing television series, well-written and acted, that will keep you guessing. Recommended.