The Grimoire of the Unknown

"What is this?" A resonant voice waited for an answer but received none.
The echoing silence of the library appeared to grow tenser.
Weighting on their hands, the leather-bound book was heavy and grim, and the eye on its cover had halted its movement.
It just kept staring at their inhuman face, motionless, but Lhari's bone mask remained stoic.
Only one thing left to do.
Creaking, the thick cover opened on the first page.
It read:

"The Grimoire of the Unknown

Or the collection of all Nemo's letters,
and of the tales they told.

So that they won't be destroyed.
So that the truth may be shown."