Edinburgh, 1901. Rose McQuinn has agreed to help her neighbour, Mrs Lawers, by delivering what she claims to be a family legacy to her only living relative. Conveniently, the trip allows allow Rose to meet with Detective Inspector Jack Macmerry's daughter to try and re-establish contact with her on his behalf. Soon, Rose's philanthropic journey takes a turn towards the dangerous when she is attacked on a train and, on returning to Edinburgh, discovers Mrs Lawers and her maid are dead. Befriending a young first-time mother and investigating the history of Mrs Lawers' family, Rose finds links not only between the two, but also to Royal history, London's theatre community, and her own home in Solomon's Tower. But when Jack is shot on duty, her attention shifts to him and his desire to get to know his daughter. Balancing the murder investigation alongside her obligations to family and friends, Rose discovers ties that reveal that the past has not completely left the present.