"It is 997 CE, the end of the Dark Ages. England is facing attacks from the Welsh in the west and the Vikings in the east. Those in power bend justice according to their will, regardless of ordinary people and often in conflict with the king. Without a clear rule of law, chaos reigns. In these turbulent times, three characters find their lives intertwined: A young boatbuilder's life is turned upside down when the only home he's ever known is raided...

In this beautiful story of adventure and survival from the New York Times bestselling author of Room, three men vow to leave the world behind them as they set out in a small boat for an island their leader has seen in a dream, with only faith to guide them. In seventh-century Ireland, a scholar and priest called Artt has a dream telling him to leave the sinful world behind. Taking two monks--young Trian and old Cormac--he rows down the river Shannon...