Hiss and Hers by M.C. Beaton

Agatha has fallen hard for her gardener, George Marston.  So much so that she's going around trying to create work for him so that she can be around him more.  When she finds him dead the night of the charity ball in his own compost heap, she discovers that he's been romancing a lot of women in the village, which irks her even more, knowing that he didn't include her.  Agatha is then hired by George's sister to find out who murdered him.  With her employees at her detective agency and friends Charles and Roy, she humorously navigates her way to find George's killer, despite putting herself and her colleagues in danger.  Hiss and Hers is the latest book in the Agatha Raisin series and, despite all the books being very similar, I thoroughly enjoy spending a bit of time in Agatha's hometown of Carsely once a year.