Irrelevant to the NightShadow series.
Nocna finds himself at the brink of his own emotional capacities, as he barely hangs on to his life, travelling through a cave system. His past constantly haunts him, he has done many things he has since regret. Perhaps the most painful- killing his own wife for his own sadistic pleasure.
A criminal syndicate without name managed to cut him a deal- break him out of prison, but he has to find an ancient relic, buried deep in treacherous caves.