Harbinger House is a Planescape® AD&D 2nd-edition adventure module.

A succubus with an unquenchable lust for power is turning the Cage into a ripping madhouse.

And the Lady of Pain ain't pleased. . . .

Something's foul in Sigil, berk. A mad slasher prowls the streets, leaving a trail of bloody clues in his wake. Leatherheads boldly court the Lady of Pain, longing for the sharp touch of her shadow. Even the silent dabus're acting barmy, a sure sign that the Lady herself is uneasy. Are these strange events tied to a madhouse full of spell-touched sods ready to slip the bonds of mortality? A curious body'd better step carefully. After all, the dead-book's full of fools who wished for power?or got in the way of another berk's wish.

Harbinger House is a Planescape adventure for four to six characters of 4th to 7th levels. From Sigil to the Outlands and back again, the heroes must piece together a puzzle that could shake the Cage to its foundations. A dark secret of the multiverse wails to be discovered in the lunatic asylum called Harbinger House, and only the player characters can shape its power-for good or ill.

The Planescape Campaign Setting boxed set is required to run this adventure. The Planescape Monstrous Compendium Appendix, In the Cage: A Guide to Sigil, and A Player's Primer to the Outlands are recommended to enhance your enjoyment of this adventure.


  • Introduction
  • Chatper 1: The Streets of Sigil
  • Chapter 2: On The Outlands
  • Chapter 3: Harbinger House



  • Designer: Bill Slavicsek
  • Editor: Ray Vallese
  • Cover Artist: Robh Ruppel
  • Cartographer: Rob Lazzaretti
  • Typography: Angelika Lokotz
  • Color Plates: Scott Burdick, Ned Dameron, Alan Pollack, Robh Ruppel
  • Border Artist: Robert Repp
  • Conceptual Artist: Dana Knutson
  • Graphic Design: Dawn Murin, Sarah Feggestad
  • Proofreader: Michele Carter

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