Rose McQuinn has agreed to help her neighbour, Mrs. Lawer, by delivering what she claims to be a family legacy to her only living relative. But Rose's philanthropic journey takes a turn towards the dangerous when she herself is attacked on a train and Mrs. Lawer and her maid are found dead upon her return to Edinburgh. Investigating further, Rose finds links to Royal history, the theatre world, and her own home in Solomon's Tower. Balancing the murder investigation along with her obligations to family and friends, Rose discovers ties that seem to reveal that the past has not completely left the present.
