Aunt Dimity and the Duke

Emma Porter is forty, fat, frumpy, and a passionate amateur gardener.
When her longtime lover dumps her for a younger woman, Emma escapes the
cloying sympathy of family and friends by setting out on a summer-long
driving tour of England's glorious gardens. A Dimity-contrived
coincidence brings her to Penford Hall, a sprawling Gothic mansion in
Cornwall, where she finds a duke in search of a missing lantern with
extraordinary powers. Suspecting there's more than one mystery to be
solved at Penford Hall, Emma accepts the duke's invitation to stay on
and restore the once glorious chapel garden to its former beauty. The
dark rumors surrounding a rock star and the near-death of the duke's
beautiful cousin confirm Emma's suspicions, and set her--with Aunt
Dimity's ghostly guidance--on the path to Penford Hall's secrets and the
pleasure of unexpected love.