Daybreak

Legend says that Drest mac Erp reigned for 100 years and fought in 100 battles. He ruled and ruined the land under his hand and none could stop him. Until now. Within his keep is a young man, Nechtan. None can remember how he came to be there, not even Nechtan himself. But in this unlikely person lies the hope of a new age for Scotland.
The lives of Drest and Nechtan are bound by more than prisons and fear. The events that are about to happen, lead by magic and the forces of good and evil, will reveal what each man is truly made of and show them that there things more important than anything they've known.
This is book 1 in the "Forever" series that tells of how Christianity and freedom came to a people so violent and fearless that even the Roman army could not conquer them. But they were conquered already, existing without hope, without life.