I won't go into great detail about the series since another reviewer did. As a 9 year old in 1966, I really liked watching Felony Squad & many other police shows of the time. For fun in 2022, I decided to watch many of the episodes on streaming services. I enjoyed each episode but the storylines were a bit far fetched at times. Police procedures of the time were not followed much; but then there wouldn't be plot. Most times, it was just the two main characters (portrayed by Duff & Cole) who would catch the bad guys without any back up help.
Also, a reviewer said this was the Los Angeles Police Dept. Obviously, scenes are from Southern California, but a city is never mentioned. It is always referred to as Metropolitan Police.
Overall, still nice to capture a bit of my youth watching Felony Squad.