I’m a big fan of the Inspector Morse series. Theres the original series called Inspector Morse made in the late 80s. Then a show called Lewis made in the early 2000s. Then Endeavour which is a prequel to Inspector Morse which was made recently. All are good in their own way. These are all very slow, methodical, and long episodes made by ITV in the UK. There are loose overarching plot elements in each show that roll out slowly over the seasons. I have to be in a mood to watch them though. Usually late winter, or fall is when that happens.