Alone in the Dark Wiki
De Vermiis Mysteriis
Golden Yellow Book.png
Type Book
Source Library (2nd Floor) (Derceto)
Author Ludwig Prinn
Game(s) Alone in the Dark (1992)

De Vermiis Mysteriis was a book in a yellow cover that could be found within the 2nd floor library of Derceto. Reading the book kills the playing character after he/she reads it, unless the player is standing on the tile with the pentagram, which is located in the nearby ritual chamber. it is considered more dangerous than reading Fragments of the Book of Abdul. Unlike the Book of Abdul, which simply drives readers mad, reading this book unprotected causes the player to be lifted into the air, their bodies twisted and crushed by some tremendous force before being dropped back to the ground, dead, as if picked up and clenched in a monstrous invisible hand.


Ludwig Prinn
De vermis

In nomine invocatoris, si non

sanctificatus es, cave.
De vermis mysteriis non absolvo follem
legendum fatum et eum versus: "tibi,
magnum innominandum signa
stellarum nigrarum et..."


  • The De Vermis Mysteriis is a fictional grimoire created by the writer Robert Bloch and later used by HP Lovecraft in the Myths of Cthulhu.
  • It seems that the Latin form used in this document is not correct.
  • For the continuation of the plot there is no use in reading the De Vermis Mysteriis.
  • The title is latin for: "Mysteries of the Worm"