Murder At The Queen's Old Castle
                                
                                
                             
                            
                         
                            
                            
                        On her first visit for fifty years to Cork's main department store, the Queen's Old Castle, the Reverend Mother is struck by how little has changed. But when the store's owner staggers from his office and topples over the railings to his death, Mother Aquinas is once again drawn into a baffling murder investigation.