Mansions of Madness - Five Frightening Adventures in Dark and Deserted Places

Oct 6, 2026

A collection of five horror adventures set in grim, abandoned places, featuring investigations, clues, and escalating encounters drawn from the Cthulhu mythos. The book presents structured sections including house calls, player and keeper information, investigation phases, and scenario handouts, supported by maps, illustrations, and planned mansion layouts. Designed for interactive play, it organizes each adventure into distinct scenes, actions, and final confrontations, combining procedural guidance with atmospheric Lovecraft-inspired dread.

LanguageEnglish

CategoryStory & Novel

FormatPDF

Pages123

Reading Time3 h 9 min

AccessFree to download

Mr. Corbitt

House Calls

Caleb's Household

The Investigation Begins

The Sanatorium

Letter from Dr. Brewer (#1)

Dr. Brewer's Article (#2)

The Plantation

Mansion of Madness

Crack'd and Crook'd Manse

The Serpent Man's Actions

Crack'd and Crook'd Manse

Player Information

Keeper's Summary

Handouts Section

Guided Tour

Note Hidden in a Book (#1)

Mansions of Mansions of Madness Five Frightening Adventures in Dark and Deserted Places Howard Phillips Lovecraft 1890-1937 H.P.Lovecraft Centenary 1890-1990 | Mansions of
Fred Behrendt
Michael DeWolfe
Keith Herber
Wesley Martin
Mark Morrison
cover painting Lee Gibbons
interior illustrations Janet Aulisio and Sam Inabinet
maps Carol Triplett-Smith
editorial and additional material William Dunn and Keith Herber
layout and more good ideas John B.Monroe
copyreading Anne F.Merritt
Chaosium Inc.
1990 | | --- | CONTENTS Mr.Corbitt… …6The Sanatorium… ……70by Michael DeWafeby Keith HerberThe Plantation… …18Mansion of Madness… …88by Wesley Martin by Fred BehrendtCrack'd and Crook'd Manse… …….54 by Mark MorrisonHandouts Section… …115 MANSIONS CF MADNESSis pubished by Chaosium Ine. MANSIONSOFMADNESSis copyighto1990 by Chaosium be;al rghs reservedCALLOF CTHULHUis the registered trademark of Chaosium ine Smlarties between characters in MANSIONS OF MADNESS and persons Iiving or dead are sticty conoidental HP Lovocat's woks are copyrighno 1963,1964,1965 by Aupust Delem and ar quotad tor purposes a ilustrafon Au materal conceming Shudse Mel and te Cthonians,aneall cther invenions of Brian Lumley as portrayed in his books,spocfealy The Burrowers Benat,are usedwim his kind permission. Cover parning irterior lustatons,and maps are copyrioo1990 by Lae Gibont,Janet Aulislo.Sam Inabinet,and Carol Tipe:-Smit respetvey:al rghts rosarved.Martha J.McNuty depiected H.P.Lovocra The roproductio of material from itin ti bok fo the puposs of parsonal or corporate proit by phobographic,loctronic,or other methods o retieval,sprohibitod.Adros quostons and commerts conorin this book as wl as requstsfor tre catabogs a Chaotium books,games,and suplements to Chaosum,Ine.950-A 56i StrotOakland CA94608,U.SA. Chaoslum Publication 2327.Publishod in July 1990ISBN0-933635-63-XPrinted in the United States of America | EXPANDED CONTENTS
nvestigator Information………90
The Fitzgerald Manse (plan).61
A Zombie (ilus.)……34—35
MR.CORBITT……6
Part One:
House Calls…… …62
Caleb's Household……….36
Player Information…………6
The Investigation.… …90
Joe Vireu(illus.)……………62
Elly's Love Philter…… …36
Keeper's Summary…… …7
The Keetling Residenc……90
The Thing That Goes Creak.62
The Investigation Begins……36
The Yog-Sothoth Connection..7
Sarah Keetling(illus.)………90
A Sleeping Victim (illus.)……63
AGuided Tou.……… …….36
Local Businessman Killed in
Andrew's Study……………91
Detours to South America……64
The Gist Libray……………37
Accident (\#1) …………8
Note Hidden in a Book(\#1).91
The Hous…………… ……64
Private Explorations………38
Bernard Corbitt (ilus.)……………9
The Dream Ghou… ………92
The Creature in
The House………… …38
Local Newspaper Stories………9
Its Lair(ilus.)………… …65
Patrick Devlin (illus.-…………93
Denizens of the Swamp……38
The Hospital Connection……9
The Boston Police……………93
Downstairs……… …6
The Gist Mansion (plan)……39
Local Man Arrested in Animal
Detective Flannigan illus.)...93
The Missing People(\#4)……6
Slayings(\#2)… ………9
Rafe Bodeen (illus.)………39
Madelaine DuMort(ilus.)....93
Upstairs……… … …6
Obituanies(\#3)…… ……9
The Sharecropper's Hamlet.40
The Dream Ghoul (ilus.……93
The Atti…… ……………67
The Sanitarium…… …10
The Swamp……………………40
Boston Museum of Fine Arts 94
Crumpled Note(\#5)… …67
Randolph
The Serpent Peopl……40
Kidnap Victim Dies(\#2)……94
The Cellars………………68
Tomaszewski (illus.)…………10
The Altar to Yig…… ……40
Boston Universiy …………95
The Climax…… … …68
Garbage Hunts…… ……10
The Lair of the S

FAQs

How many adventures are included in Mansions of Madness?

The book contains five frightening adventures, each structured into investigative phases and encounters.

What kinds of supporting materials does the book provide?

It includes maps and interior illustrations, plus planned mansion layouts and handouts referenced in the contents.

How is the game content organized for play?

Each adventure is broken into sections such as player information, keeper guidance, investigation steps, and scenario resolutions, including action and scene breakdowns.

Oct 6, 2026

Upload by WPS_1786070896