Now I can properly send you back to Shattrath City.  You've uncovered evidence of Kael'thas making pacts with the Burning Legion and you've got the key to the overlord's back door.$B$BMake sure Voren'thal doesn't topple over with excitement from the news - the old man's getting a bit fragile, if you know what I mean.  You'll find him inside the Seer's Library at the Scryer's Tier.