Summerton (Lady Eleanor Mysteries #1)
Becca St. John

On the brink of losing everything, the Duke of Summerton fills the coffers by marrying heiress Caroline Howlett, but at what cost? She doesn't want his crumbling estate, or his title and what is he, as a man, without them. Before he can grasp this dilemma, something greater than doubt threatens their marriage.
When Caroline said she’d rather be dead than married to the duke, she hadn’t meant it literally. Forced into marriage by her guardian, Caroline doesn’t give a fig for the idle life of the aristocracy. She wants to run her father’s enterprises, and she will, once dead bodies stop getting in the way.
Aided by Summerton's widowed aunt, amateur sleuth Lady Eleanor, the Duke and his reluctant bride scramble to uncover just who is trying to kill them.
~Neither considered love part of the bargain
The Lady Eleanor Series ~ Regency cozy mystery with a touch of Gothic.