The Duke Gets Desperate by Diana Quincy

Diana Quincy returns with a steamy affair between an Arab-American woman who inherits a run-down castle in the English countryside and the duke who asserts the castle is his, in the first book in a brand-new Victorian historical romance series.

Anthony Cary, Duke of Strickland, inherits his spendthrift father’s title and can finally restore the family castle to its former glory. But at the reading of the will, Strick is stunned to learn that his father has secretly disentailed him, leaving the family manor—home to twelve generations of dukes—to Strick’s American stepmother. Everyone knows Strick detests the dowager duchess, and when she dies mysteriously, damning rumors start to surface.
When Raya Darwish unexpectedly inherits her glamorous late cousin’s castle in the English countryside, she clashes with the charismatic young duke who insists the castle is rightfully his. The estate is practically bankrupt, so she must find a way to work with the duke in order to save both of their futures.
The two cannot stand each other, but mutual disdain soon gives way to desire. When questions arise about how her cousin died, Raya cannot help wondering if Strick’s sudden unbridled passion for her is part of a scheme to get his castle back…