Cthulhu Companion - Ghastly Adventures & erudite Lore

The "Cthulhu Companion" was released in 1983 and came in at 64 pages. This book may have the most amount of material presented in a gaming book in a content to page ratio. It contains a mix of rules, resource material and adventures. Given that it is 26 years old give or take a few months the rules information may not be so relevant unless you are playing a pure first edition game. The rest of the book is still very useful and the adventures are all worth having to use at some point and the book provides no four. Below is the content listing of the book.

Contents:
- The Cthulhu Mythos in Mesoamerican Religion
- Further Notes on the Necronomicon
- Descriptions of five different prisons
- Two new skills (photography and lock picking)
- A Lovecraftian timeline
- Descriptions of phobias
- Additional deities, races and monsters
- Excerpts from mythos tomes
- Four scenarios: 'Paper Chase' (for one Keeper and one Investigator), 'The Mystery of Loch Feinn', 'The Rescue' and 'The Secret of Castronegro'
- Poetry
- Sanity Quiz

From the back cover:

"The Cthulhu Companion is a collection of new Cthulhu mythos lore, scenarios, and rules additions to the game. From this volume the Investigators gain two new skills and a chance to encounter prehistoric monsters, find a missing uncle, stop cattle mutilations, and solve a kidnapping. The grim prisons of four continents plus new Cthulhu mythos deities, races, and monsters help the Keeper propel the Investigators to madness. Player-characters will reel from new phobias and insanity types."