- For the Inscription-created item, see Twilight Tome (item).
The Twilight Tome
The Twilight Tome is an ancient book used by the Twilight's Hammer clan in the Darkshore. [38.6, 68.1] It's written in an ancient language, and illustrated by a master artist. You can't read it as the text twists into grotesque shapes, if you try it. When bringing the [Insane Scribbles] to Onu he senses the chaotic, primal magic of the old ones in it.
Quests
[17] The Twilight Camp - [17] Return to Onu
[17] 
Notes
There are two tomes at the site, only the northern will complete the quest. The one in the south will knock you down with a demonic hand.
Something defends the book
Trivia
In Diablo 2, another game by Blizzard, there is a Twilight Tome in the Stony Field that starts a quest to kill the evil Countess.