The Investigation skill is used during the Swords of Destiny Timeline to gather evidence. This skill is new, as of LU32. You gain the skill after completeing a task for Berlok in the A Crusade to Faydwer quest.

You may also aquire access to this skill while on certain Epic Quests as of LU42. However, the skill will cost you 8.75 Platinum. You can get the skill at Teren's Grasp from Juulika McDarid at ( 1838, 487, -840 ) /waypoint 1838, 487, -840 .