I looked at the non-spoilery reviews before watching and I was ready for this episode to be a horror show. It does get off to a really shaky start, but the second half improves. The mystery was more focused too, after the last one being so poorly plotted. Agatha does start off in raging jerk mode plus has another scene that is nothing but eye-rollingly bad pratfalls, same as in the haunted house episode. It's pretty impossible to accept her as a competent sleuth and formerly wildly successful businesswoman. She's shown to function slightly below the level of Toni - who I *guess* was the cause of the traffic tie up in the opening scene? It was so poorly written/edited/filmed, one can't be sure. Once they drop most of the slapstick antics of the first third, the show becomes more watchable.
Altogether not amazing, but by Agatha Raisin standards definitely not the worst. Also, as I should have expected, the sexual jokes were quite tame, even if very very hacky, so I have no idea how any but the most prudish could be outraged. They're more a symptom of overall amateurishness, but most of the characters make it fun.