Shadows of the Past — Margaret McDonagh

To take her mind off her Great Aunt Rosemary's operation, Holly Fisher decides to spend some time at Pagham Harbour Nature Reserve. The weather is foul, however, and when she becomes stuck in the mudflats, handsome Rick Cunningham comes to her rescue. Despite her reserve and her past history, Holly finds herself drawn to Rick's warmth and kindness. But when she discovers just who Rick is and how involved he is with Rosemary's problems, how can she ever trust him again?