It was a good concept but badly executed by the writers and producers . Instead of spending 80 percent of the time in the present they should have done the opposite, and spent 80 percent on the past. The first three episodes referenced the past but then there was basically nothing other than an average cop show until episode 8, which referred to the past but then at that point it was cancelled. This was a writer and producer failure as the actors were amazing. Major constructual fail.