192 pages. Contents: Foreword, Introduction,The Game Rules, Investigator Creation, Game System, Sanity, Cthulhu Mythos, Magic & Spells, Playing the Game, Color Portfolio, Scenarios, 1920s Sourcebook, Beasts, Monsters, Time, Prices & Cash, Travel, Crime, Weapons, Prisons, Biographies, On Cultists, Researches, Automobile Chases, Spells: A Grimoire, Ritual Curses, Excerpts, Plan: Rail Coaches, Poetry (& Song), Cthulhu Cartoons, Sanity Quiz, Map: Arkham, Investigator Sheet, Map: Mass., R.I., Size Table, Size Foldout.