[@KatherinWinter]

The boy said nothing, but this did seem to be getting him somewhere. Taking the paper back with a nod of thanks, he took out another and wrote a few other words to show to the guard. 

[i]Chiaroscuro?
Monochrome? 
B/W?[/i] 

He didn't know if they'd mean anything to this person, but it was worth a try. Especially if they weren't even meant to go to the library, as weird as that seemed. That would obviously be an answer the doctor should have expected them to come up with, after all, unless he really did intend to just torture them? 

He hoped that wasn't the case. He was already pretty frustrated. 

Whatever the situation was now, he did need a lead of some sort if he wanted to do anything else. The library- or libraries, rather, were the first guess, but this new information seemed to bring about more suspicion. 

What were they actually doing?