The Devilish Duke (Saints & Scoundrels - Book 1) by Maddison Michaels
When Sophie learns her beloved orphanage is in imminent danger, she will do anything to save it. Even marry a ruthless rake who takes what he wants in business and pleasure. A man who’s everything she’s always feared most—but whom she reluctantly begins yearning for.
Then Sophie becomes the target of a killer lurking from the dark shadows of Devlin’s past. And they find not only their lives in jeopardy but their very hearts.