M Squad is probably the only true film noir TV show ever shot. It was done with low camera angles and the most intense black and white photography with surprising lighting. As few shades of gray as possible were used. It needs to be viewed on a b/w TV for the full effect. It is an important work, and if the series still exists, it should be shown on PBS. Very intense drama. A good antidote to the sugary sweet shows like (two of my true favorites) Leave it to Beaver and Father Knows Best. Good shows, but the fifties were nasty, and the TV shows that you find on G4 or Nick are just not representative. It was a show that made the viewers uncomfortable, I have read. I a very thankful that my parents never took those parental rating seriously (yes, they had them then).