The black waters of Ireland hide more than trade routes.

After Lindisfarne, Einar Thorstein returns to the Liffey with ships, scars, and a ledger of dangerous roads. Dubhlinn is no longer a seasonal shore of mud and tents. It has become a place of tolls, hidden debts, broken oaths, and men who rule without crowns.

To survive among Irish kings, Norse captains, spies, and rivals, Einar must learn that power is not won only with axes. It is carved into timber, counted in debts, whispered beside fires, and paid for in blood.

But the deeper he sails into the black waters, the more he discovers that every road has a keeper, every alliance hides a knife, and every victory leaves someone waiting in the dark.

Crown of Black Waters is the third volume of The Viking Blood Saga, a dark Viking historical adventure filled with raids, sea roads, brutal politics, and the rise of a northern bloodline shaped by fire, water, and iron.