John Doe on Her Doorstep (Mills & Boon Intrigue) (The Enforcers, Book 1)

Dr. Dani Archer's orderly life had become complete chaos. First, her father mysteriously died, then a sexy stranger–with no memory–appeared on her doorstep…. Complicating matters, someone was trying to kill her. Like an avenging angel, the John Doe became her very own personal protector, displaying instincts and performing feats almost superhuman. And now, the key to her safety lay in unraveling the long-buried secrets of the past to solve her father's death. Only, suddenly it seemed the greatest danger of all was surrendering to an all-consuming desire…