I quite enjoyed Midsomer Murders when John Nettles was on there. Not so much with Neil Dudgeon.
For me, it's the emphasis on the thinking out the solution to the murder. It's ALL they ever do - no gun fights, no car chases, no bloody brawls trying to take down the baddies! It's BORING!!!! to watch.
TV shows like FBI are always go, go, go, go!!!!!!! And the thinking part doesn't get a lot of attention, mainly when they have the command centre pulling footage from street cameras and examining documents, records and then following up.
I wish I could find a show that had a balance. Law & Order comes close but the thinking part is usually on the legal side when it goes to trial and not on the law side when they're trying to figure out the crime - who, what, where, why, when, how.
The original Law & Order series had two esipodes that stood out to me: One where they're interviewing witnesses and the descriptions are all over the place - he was short, he was fat, he was thin, he was white, he was dark, he was tall, etc, and the detectives are getting more and more frustrated and are about to dismiss the witnesses and then one of them on the way out the door says: ".....although...he was there too." and the detectives are just flabbergasted - there were TWO men there!!!!!!!!! They were getting descriptions of two separate men, not one!!! You'd think that would be one of the most basic things an investigator would start with....
The other one was where a body was discovered and they can't make head nor tails of the manner of death - he had water in his lungs. He drowned! They though he was stabbed. He had a gunshot wound. He was shot! And they're saying, "How'd this guy die???? He's been stabbed, shot, drowned.....???" and it turns out the victim was stabbed and then frozen, then he was dumped and thawed out 5 years after the death. So the manner of death took some detective work and then they had to work back to find out who he was.