Perfidious Tome
The Perfidious Tome is a relic of the Thousand Sons' Cult of Duplicity. Reading from this infernal treatise, the bearer discovers hidden truths on one page, and utter madness on the next.[1]
Source
- 1: Psychic Awakening: Ritual of the Damned, pg. 83 - Thousand Sons: Cults of the Legions