I remember M-Squad when it first came on. I was 15. Lee Marvin was a "no nonsense" cop much like Dan Matthews and Steve McGarrett. Lee Marvin was as good being good as he was good being bad. I think that Police Squad is based on this show. I have the original LP from the tv show that I bought 40 years ago and copied it and still play the tape in my car. The background jazz music was terriffic.