The Necromancer's Log is a manuscript in Diablo III. It is given to the player by Mehtan the Necromancer after completing The Restless Sands event in Stinging Winds in Act II.
It reads as follows:
Two decades ago, my mentor faced the forces of evil and emerged victorious. I cannot hope to surpass his achievements, but I will try to bring balance to the raging forces that threaten ot tear the world asunder in these days. The spirits are restless near Caldeum, I must quiet them.