"Blood Will Out" is a very good entry into the Midsomer Murders series, and an early one, with Barnaby (John Nettles) and his original partner, Troy (Daniel Casey).
In this episode, Barnaby is put on a diet by his wife and daughter, and Troy is supposed to make sure he doesn't cheat. So one can imagine the mood he's in as he takes on the conflict between villagers and itinerants who settle in for a while. One group is related to one of the people in the village, and the other is the Smith clan, a bunch of thieves.
When the local magistrate is murdered, there are plenty of suspects among villagers and itinerants. There are also complicated relationships, with a pair of married couples previously married to their current spouse's ex. Finding the murderer this time isn't going to be easy.
Very good story with some nice humor coming from Barnaby's diet and Troy's efforts to keep him on "cabbage day" or whichever day it is, and Barnaby getting into an argument with the salesperson at the clothing store, comparing the store unfavorably to Marks & Spencer.
Recommended.