Rift Quest:A Demon's Grimoire  

The grimoire is on a bookstand at the top of the south tower. From Exile's Den, go up the ramp on your left to the tower entrance and ride the lift all the way to the top. There are 2 mobs there, one melee patroller and a mage standing next to the book. They will not attack until you step off the lift but do not take too long to decide as the lift starts back down quickly!