There are various shrines in Dereth that allow a Player Killer (PK) to regain the protection of Asheron and become a Non Player Killer (NPK).
You are enveloped in a feeling of warmth as you are brought back [sic] protection of Light.
On Darktide, the shrine's chamber lays empty.
List of Shrines:
Adja's Memorial - Ithaenc Cathedral (82.5S 93.4E on Vesayen Isles)
Altar of Asheron - Trothyr's Rest (10.4N 54.9E, near Rithwic)