A murder which may be more than it appears leads Robert Young of Newbiggin and his friend Captain Travers of Edinburgh's Town Guard into a investigation which is hampered by the Jacobite forces of Bonnie Prince Charlie occupying the city while the garrison who hold out in the castle bombard the city with cannon fire. Meanwhile the people of Edinburgh are forced to play a game of factions in order to keep favour with all sides of the occupation. Through this maze of conflicted loyalties and family ties the two friends must unmask the killer and see that justice is done
4 parts