From publisher blurb:
1 on 1 Adventures #18: Redemption is a Pathfinder adventure designed for one GM and one player.
For many generations following Halueth Aridryll’s death, his keep remained abandoned, preserved from ruin by ancient elven magic. From time to time the children’s children of the tragic lovers sought to claim the keep for their own. Such efforts invariably failed, and the line of Aridryll faded into obscurity. But now, destiny awaits! Castle Aridryll, the forgotten keep in a hidden valley extends its curse over all who enter its domain. The last heir of the line of Aridryll represents the final hope of salvation for the keep and its builder, a fallen elven paladin whose soul burns in eternal torment.