Ellen Kellaway, orphaned at age five, was raised by wealthy cousins, but was never allowed to forget that her every advantage was owed to the charity of others. However, when the son of a powerful London family asks for her hand in marriage, her world is opened up to untold wealth and social position. She never imagined that such an unlikely dream would come true. Despite these wonderful new developments in her life, Ellen continues to be wracked by the bad dreams that have haunted her since childhood. What is the meaning of the lifelong nightmare -- the image of an unfamiliar room, a door opening, and behind it a dreadful presence; Could it be urging her to uncover the secrets of her long-lost family -- of the ancient home of the Kellaways on the Far Island, off the wild coast of Cornwall?