Incredibly annoyed, and near breaking point, the imp answers.
"What do you want next? My true name? Well... the bow is mine to give because I have killed every incompetent idiot that walked in here so far. Since I am not interested in finding out whether the stupid fools have a will, I have put them in storage." The imp gauges the reaction of you all after saying this.
With regained confidence the Imp then says the following:"Alright. Durgeddin the wise is someone I'll give you answers about. But only him. I'll tell you nothing about Saljara... at least not till you return to secure my release. I need to bargain as well...human. Durgeddin the Wise was what the dwarves consider to be a valiant and clanleader. When he acquired the Tome of Rulership by Divine right, Dwarves flocked to him in the Tarnian mountains. The dwarves, competing for space with many races such as Goblins, Orcs, Duergar, Mind Flayers and Drow, started to become so numerous in one area, that these races became highly annoyed. The Orcs first killed the Goblins for food and living space, but then suddenly found themselves to be on the bottom of the pyramid. The mind Flayers and Drow had an idea. They trained the Orcs to assault Durgeddin's realm. They really had no choice in the matter. Well equipped with Duergar weaponry, they were winning the war last time I heard."
"Durgeddin, the fool, not quite understanding how the Tome manifests itself, sent for this guild to analyse it. After careful coercion, he decided to give it away. It passed through here, where Saljara studied it. She made notes. Those are the notes you want. She then decided, together with a Dwarven emmisary, to ship the Tome to someone else. She did this in secret, and it is unknown to me who now has it."
"Well, that should be enough. There shouldn't be any traps, but plenty of locked doors. And don't think they'll open with a simple Knock spell, this is a mage guild after all. I don't know of any secret doors either. They are far too hard to hide from mages. A simple spell can pretty much point you directly to secret doors, so the builders of the guild never bothered with them."