The Thing at the Threshold

From the back cover: A dramatic chain of unsettling events over the past ten years leads to wholesale madness. A complete campaign in three chapters • detailed background for important characters • extensive, deluxe player handouts. User summary: A 1920s campaign book for Call of Cthulhu. One of only two books — along with Minions — published under the short-lived "Cthulhu House" imprint. These books were produced by out-of-house authors and artists but printed and distributed by Chaosium.