Call of Cthulhu Investigator Handbook - Hardcover

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A Core Game Book for Players

“We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far.” —H.P. Lovecraft

Will you stand against the horrors of the night?

Whether learned professor, nosy journalist, or hard-hitting detective, investigators need all the help they can get. Let this book be your guide. The Investigator Handbook is an essential player’s aid for the Call of Cthulhu 7th edition roleplaying game.

Chaosium Unveiled: The Investigators Handbook

Watch the unveiling video to see the book for yourself. Remember that you get the PDF when getting the physical copy.

Written for those who will be playing the roles of investigators, the Investigator Handbook contains expanded rules for creating players characters, a wealth of over 100 occupations and skill descriptions, as well as guidance on getting the most from the game. What’s more, there’s a range of organizations for your investigator to belong to, detailed information about the classic 1920s setting, equipment and weapons for both the 1920s and modern day, and expert tips and advice for all budding investigators.

No self-respecting investigator of the Cthulhu Mythos should be without it!

Download the index for the Investigator's Handbook and the Keeper's Handbook here.

What the Critics Say

2017 ENnie winner - Investigator Guide for Best Cover Art

"An indispensable purchase."—Antonios S. Review, RPGNet.

"A must-have if you’re running a long term Call of Cthulhu game… Overall there is something for everyone in this book whether you are a game keeper or a player."—Geeks-a-go-go.

"Call of Cthulhu is now the Pepsi of RPG franchises, alongside D&D’s Coke, and the game’s success is part of the revival of Lovecraft and Lovecraftian fiction."—Paul StJohn Mackintosh, “The Legacy of Lovecraft” in greydogtales.

"Call of Cthulhu has been called “one of the best roleplaying games of all time” (Geek & Sundry). But something that’s overlooked about this classic horror RPG… is that it’s also one of the most versatile and well-researched historical RPGs around... I mean honestly, you can now play CoC in more time periods than your average season of Dr Who. "—Games Vs Play.

"The Investigator Handbook is jam packed with info designed to get players up and running in CoC without muss or fuss – 9/10"—The Gaming Gang.

"…one of the most iconic tabletop roleplaying games of all time."—

"The ultimate horror RPG, Call of Cthulhu is a stone-cold classic of the tabletop."—Tabletop Gaming Magazine (UK).

"It almost destroyed my life and career"—George RR Martin (Game of Thrones).

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Rule Set:
7th Edition Call of Cthulhu
Year Released:
Page Count:
Full Color Hardcover
Keith Herber, Mike Mason, Paul Fricker
Cover Artist:
Sam Lamont
Interior Artists:
Jonathan Wyke, Paul Carrick, Francois Launet, Victor Leza, Charles Wong, Mike Perry, Mariusz Gandzel, Cyril van der Haegen, Linda Jones, Rachel Kahn, Grilla, Chris Huth, Robert Hack, John T. Snyder, Nathan Rosario, and Earl Geier
  • 5

    Posted by Nick Ingham on 27th Jul 2020

    The question I've most often seen asked about Call of Cthulhu 7th Edition is whether this book is necessary to play the game. The answer is no - everything you need is in the Keeper's Rulebook. But what is in this book is well worth the price. Expanded character creation contains a detailed look at skills, and a positive cornucopia of occupations. There's advice on investigation, a selection of organisations for Investigators to belong to, and a guide to the Twenties era.

  • 5
    Not required, but strongly recommended.

    Posted by Codi on 9th Apr 2017

    This book isn't required to play Call of Cthulu but does help give a better idea of the amount of freedom the Call of Cthulul system has. It is a little hard understanding how the occupation system works from the Keeper Rulebook and can get chaotic when a bunch of people are making characters together. The Investigators Handbook's premade occupation skill sets make creation a lot easier and chapter 8 is a fun way to pull ideas for characters, motivations, and scenarios. There is a lot of information in this book that can be found in the Keepers Rulebook, most of it comes in handy when multiple people are going through rules on items, characteristics, or play rules.

  • 5

    Posted by Dave in NC on 27th Oct 2016

    Not only is this a top of the line hardcover book with heavy duty cover, beautiful color artwork, heavy pages and great binding, but they really took the time to ensure that it arrived in excellent condition. When I saw the packaging, I immediately lost 3 points of sanity! The book was double boxed, with spacers at the corners to reinforce the package in case it was dropped. I really appreciate the extra care that went into the packaging to make sure the books arrived in factory mint condition. The game contained in the book is phenomenal, of course. Easy to understand rules, lots of options to customize your game to make it as complex or as straight forward as you and your players want. It really captures the spirit of The Cthulhu Mythos. Lovecraft would be proud!