On one of these trips, she saw another member of the cipherer's guild, 
also taking his break, and noticed that the key hanging around his neck looked 
familiar: it was one of the eleven keys that Nell and her Night Friends had 
taken from the Faery Kings and Queens! She concealed her excitement and 
followed this cipherer back to his stall, making a note of where he worked. 
Over the next few days, going from stall
to stall and examining each cipherer, she was able to locate the rest of the 
eleven keys.