Blood lies

Ben Dafoe, a young doctor and part-time crime-scene consultant for the Seattle P.D., is haunted by addiction. Two years earlier, a cocaine habit claimed the life of his identical twin, Aaron. Now Ben walks onto the scene of a stabbing to learn that the victim, Emily Kenmore, is his former fiance - another loved one who fell prey to addiction. When the DNA from the scene matches Ben's blood, he becomes the prime suspect.