Fugitive Prince is volume four of the Wars of Light and Shadow by Janny Wurts.

The story follows two half-brothers, Lysaer and Arithon, who are cursed by a Mistwraith to always be in conflict.

Lysaer, a leader who claims divine power, fights to protect humanity from magic he believes is dangerous.

Arithon, a mage, wants to avoid war and restore peace by finding ancient races.

Their rivalry worsens when a group of enchantresses supports Lysaer, leading to new tensions and the threat of another war, as the Mistwraith’s curse keeps them locked in battle.