This is a compendium of creatures, drawn from fiction spanning over seventy years and from over ten years of Call of Cthulhu scenarios, all the malevolent and uncaring creatures of the Cthulhu Mythos. Parts of this book were originally published as Ye Booke of Monstres I and Ye Booke of Monstres II . New to this book are several new creatures; the field notes of Sir Hansen Poplan; and four color plates featuring Azathoth's court, Cthulhu, the Haunter of the Dark, and Shub-Niggurath.
This book is part of the Call of Cthulhu RPG Books series and is book #47 in the series.