[X] Try to convince the wraith to explain what happened on the day of the summoning -[X] Blood Wish a Zone of Silence spell so that we can converse with the Wraith without being overheard. Ask Varys to Telepathically inform the Herald we are doing this to gain the Wraith's trust. -[X] Play upon the Wraith's guilt and regrets to convince it to tell us of the day it died and what it did to not only Summon the Herald, but to bind it to the mansion. If it balks, fearing we will work with the Herald, outright admit we have no intentions of freeing N'Gath which don't include it's capture or destruction. The Herald erred in letting us know the Wraith held the key to it's prison.