The Return of Connor Mansfield (Harlequin Romantic Suspense Series #1784)

One of the Mansfield brothers was dead to everyone else…except her 

Having mourned the "death" of her fiancé, Darby Kent isn't prepared for the moment they come face-to-face. For years, the man she loved and lost has lived in hiding. Until now. Connor is the only person who can save their ailing daughter, a living testament to the passion they once shared. But time is running out. And while Darby prays for their daughter's survival, she must confront old desires…and powerful new enemies who've patiently awaited Connor's return.