The Daemonatia is a book of dark magic that was in the library of the Cornwall Institute.
History[]
The Cornwall Institute is known to have a large collection of books on dark magic in its library, including the Black Volume of the Dead, the Malleus Maleficarum, and the Daemonatia.[1]
After the Dark War, there were not enough Shadowhunters to occupy all the Institutes, and the Cornwall Institute fell into disuse. It is unknown what happened to the books in the library, such as this one.