by Cherryl Anne Porter

Dedicated Pinkerton agent Sarah Margaret "Yancey" Calhoun heads for England at the request of the Dowager Duchess of Somerset, who believes that Yancey is her son's estranged wife, after another woman named Sarah Calhoun turns up murdered in Chicago, and finds herself masquerading as the wife of the dashing Samuel Treyhorne, Duke of Somerset, to catch a killer. Original.