Mages tend to work alone, smarter ones have more than just one workshop though. [ Caster crosses arms on his chest allowing for the hood to fall onto his face. So he told them the book was lost but- how much can they believe him? ]

Did he write that book was lost in his notes, or was that his answer to you... questioning him?

[ This they will probably get more as time progresses. Humans looking for knowledge, humans looking for power. ]