Agatha Raisin and the Haunted House
M.C. Beaton Audio Book

Penelope Keith - who starred as Agatha Raisin in the popular BBC Radio 4 series - reads the whole of M. C. Beaton's novel.
Reports of a haunted house soon have amateur sleuth Agatha Raisin snooping around, only to discover the victim of the haunting is a universally disliked old biddy on whom someone is playing a practical joke.

But then the old lady is murdered and, for Agatha - Miss Marple with attitude - solving a crime is much more fun than ghost busting. Very soon she's up to her usual tricks, involving the villagers, local police and, naturally, her handsome new neighbour...