Author: Michael DeWolfe
Appears in: Mansions of Madness (Supplement - 1st edition), Mansions of Madness (Supplement - 2nd edition), Mansions of Madness (Supplement): Volume 1 - Behind Closed Doors, Les demeures de l'epouvante
The investigators get to know their neighbor and his family a little bit better than they would like.
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Spoilers - Keepers Eyes Only
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Across the street from an investigator's home is the house of Bernard Corbitt, a widowed businessman who is fond of gardening and generally well-liked by his neighbors. One Sunday evening, the investigator (possibly in the company of his or her friends) is alarmed while observing Mr. Corbitt returning home with some packages - one of which appears to contain a child's severed arm.
In fact, Corbitt is a servant of Yog-Sothoth. Fourteen years ago, Corbitt was called to India by his father, who had fallen under the influence of Ramasekva - an avatar of Yog-Sothoth. During a ritual, his father was devoured. Bernard Corbitt was spared and has served the Outer God ever since. Returning home and marrying soon after, Corbitt allowed Yog-Sothoth to impregnate his new bride with twins. One of the twins died in childbirth along with its mother in Corbitt's house; the attending nurse immediately went into a coma, doctors and police were called, and the community shared its sympathies with the grieving widower.
The undisclosed surviving twin, however, has been hidden away in Corbitt's basement for the past twelve years. An abomination, a mass of tissue devoid of human organs and limbs, Man-Bagari - the child of Yog-Sothoth - is tended to by Corbitt until the day it can serve as a Bridge for Yog-Sothoth to enter our world. Corbitt has been procuring children's limbs and other body parts from the local hospital to surgically aid (and feed) the "Child-Thing". Corbitt also has access to an alien drug that can propel the user into insanity and even into other dimensions.
Meanwhile, the child of Yog-Sothoth has been growing rapidly and requires more and more body parts and food.
Player Handouts: The Corbitt Papers #1-4
Locations: Anonymous U.S. town or city
The contents of this article are taken from the 2nd Edition of the Mansions of Madness supplement.
Includes a map of Corbitt's property and floor plans for Corbitt's house.
The scenario states it can be run for one or more investigators, but that one of the investigators should own a house in a fairly wealthy part of the anonymous town or city in which the events take place.
This is a 1920s-era scenario, but a Keeper shouldn't have difficulty moving it to a different time period, keeping in mind that it does involve secret surgical transplants (which are aided by Yog-Sothoth and magic tomes).
The location of the scenario isn't specifically identified, so it could take place in any town or city with a nearby hospital and local newspaper.
The scenario resolution is open-ended for the investigators. Options addressed include destroying the threat, alerting the authorities, just walking away, or even nursing the creature to maturity.