With the sun's light waning, humankind has divided itself into the worshippers of the God of Light and the servants of Eternal Night, with both factions preparing to do battle to the death, in the epic conclusion of The Lightbringer Trilogy. Reprint.
Not much original in this fantasy series conclusion. The followers of Reh, the sun god, face off against the followers of Iss, Lord of Darkness. The good guys include a priest of Reh, a boy-king, and a pretty woman who is known as the Lightbringer. The bad guys are the undead, vampires, and are led by the meanest undead vampire of them all. You know how it ends.