A Thirst Before Time

Walkthrough
''To flag this quest, you must have completed the optional portion of A Thirst For Eternity, so that Roskin's volume is added to the library.
 * Talk to Roskin (H-8) in Eastern Adoulin for a cutscene.
 * Talk to Polished Pebble (J-10) in the Inventors' Coalition in Western Adoulin for a cutscene.
 * Return to Roskin for a cutscene.
 * Travel to Yorcia Weald (I-10) and check the Well-Kept Cache for a cutscene.
 * Check it again to fight Inquisitor Mortuus. Defeating it will earn you a Weathered Haverton Hat
 * Check it again after the fight for a cutscene. You will receive Forgotten Memory.
 * Zone into Eastern Adoulin for a cutscene.
 * Talk to Roskin.
 * Talk to Palomel (G-9) for a cutscene.
 * Talk to Roskin for a cutscene and your reward.
 * At any time, you may trade the Erudition Necklace to Roskin for 30,000 bayld.
 * At any time, you may trade a Frontier Soda and 30,000 bayld to Roskin for the Erudition Necklace.