Haunting Adeline by H.D. Carlton is a dark romance novel that follows the story of Adeline, a young woman who inherits a grand estate from her estranged grandmother. As she settles into the mansion, she begins to experience eerie and supernatural occurrences that draw her into a web of mystery and suspense. The book combines elements of romance, thriller, and the paranormal, creating a gripping narrative that explores themes of love, obsession, and the unknown.