The Library of Sickness is a thorough examination of the magical works of Sconosciuto, written by Vetten Ninefellows, the Dagger of Nell. The book teaches readers how to identify common practices used in Adred's magic in order to better decipher his chaotic form of spellcraft. It also functions as a makeshift autobiography for Adred, detailing his growing madness and how it affected his work. As if affected by Adred's story of insanity, the book grows more difficult to read and its writing more frenetic as it reaches its end before it abruptly ceases. The book is currently in the possession of Steve Moran.
Only one copy of the Library of Sickness is known to exist, and it is infamous among occult scholars for its uncanny ability to somehow constantly move between libraries, and the strange ends that scribes meet when attempting to copy its pages.