That is not dead which can eternal lie,
And with strange aeons even death may die...

Here, shall you know the terrors of the void, the nightmare bringers, and the unspeakable lurkers. Ancient secrets, whispered lore, and collected facts concerning the alien and otherworldly horrors of the Cthulhu Mythos. A cavalcade of monsters and god-like alien intelligences beyond human understanding, all vividly detailed and portrayed. With over 250 entries to inspire countless adventures.

The information within is designed to bring the creatures and bizarre races of the Cthulhu Mythos to life at the gaming table, as well as all manner of Great Old Ones, Outer Gods, Elder Gods, Avatars, and Unique Beings. Their lore and statistics updated and revised for the Call of Cthulhu 7th Edition game (and Pulp Cthulhu). All brought to startling life by the illustrations of expert artist Loïc Muzy.

This two-volume hardcover collection comes in a slipcase and is packed with ideas, concepts, and insights to immerse your scenarios and campaigns deep in the heart of the Cthulhu Mythos.

Volume 1: Monsters of the Mythos
From the spawn of Abhoth to yuggs, the monsters of the Mythos are herein described. With over 150 entries concerning Cthulhu Mythos monsters and alien species, as well as creatures from folklore and animal beasts, this tome supplies a wealth of ideas to bring your campaigns and scenarios life with untold horrors.

Volume 2: Deities of the Mythos
Fundamental truths of the cosmos herein lie, to be used to support and inspire countless adventures by bringing Cthulhu, Hastur, Azathoth, and many others to your games. With over 110 entries concerning Great Old Ones, Outer Gods, Elder Gods, Avatars, and Unique Beings, this tome supplies a plethora of ideas to immerse your campaigns and scenarios deep in the heart of Cthulhu Mythos lore.

Call of Cthulhu (7th edition) - Malleus Monstrorum - Cthulhu Mythos Bestiary Vol 1 & 2