Have They No Shame?

Archmage Berinand is the Kirin Tor's foremost authority on Malygos. He's spent his life studying the aspect and his behaviors.$b$bRecently, he loaned me his research on the Arcanomicron, some sort of map that Malygos is trying to assemble. I made the mistake of discussing it with a group of Horde adventurers while they were restocking their goods here - and now it's gone!$b$bIt must have been them, $c. Please, follow them into the nexus and recover the book before Berinand comes to recover it.