IMPORTANT NOTE: This quest can be tough depending on your level. 25+ is recommended as all the mobs around the places you need to go are white-con or higher at level 20!
Drizas N'Ryt in Darklight Wood sends you to Nektulos Forest to reclaim some items from the Thexians. These items are extremely rare ground spawns found within and between the Thexian camps near the Darklight Wood zone. TIP: If you are able, use Gnomish Divining Rod to make searching for these items easier.
Next kill the Thexian searchers along both sides of the river between 'The Funeral Pyre' ( -971, 12, -731 ) and 'Headstone Walkway' ( -855, 59, -1340 ) in Nektulos Forest for arcane signets. The signets are not an auto-update, they seem to be a common spawn.