If you dare to walk the shadowed streets where sanity frays, then the definitive guide to Lovecraft's iconic city is here! In Call of Cthulhu Adventure: Arkham, the threat of the Cthulhu Mythos is ever-present, lurking in every darkened alley and forgotten corner.

This is the ultimate, premium resource for Keepers of Arcane Lore, serving as a comprehensive sandbox campaign setting for Call of Cthulhu. Dive deep into the ominous history of Arkham itself and unravel the secrets of the infamous Miskatonic University. You'll find incredible detail within these pages, including:

• Details of 9 distinct neighborhoods, each with its own character and dangers.

• Over 290 meticulously described locations, from dusty libraries to hidden cultist lairs.

• 80 fully-detailed NPCs, ready to aid, hinder, or utterly confound your investigators.

• New rules and skills specifically for Arkham investigators, making this book an ideal addition for Call of Cthulhu players looking to deepen their connection to the setting.

• Two Arkham city map posters – one clean for players to explore, and one cleverly marked with hidden information for the Keeper to spring those terrifying surprises.

• A fantastic poster-sized copy of pages from the Arkham Advertiser newspaper prop, adding incredible immersion to your game!

This supplement is part of the Arkham Unveiled line and is designed for use with both the Call of Cthulhu roleplaying game and the Pulp Cthulhu supplement, both available separately. Are you ready to face the cosmic horrors lurking just beneath Arkham's surface?