again and again and again and again and again. there are a lot of ways to know a city, but nobody knows it better, what really makes a city run, how the wheels of power turn or don't, what scares it, what ails it, nobody knows these things better than murder police. tony wright and mike carlyle, are recently retired homicide detectives. each of them has 20 years on the job as street cops and another ten as detectives. they have seen it all. this is mitch's. it's a cop bar. how have you seen the town change? >> pre-riot days, detroit was booming. it was the place to be.