| Publisher | Chaosium, Inc. |
| Editor | Sandy Petersen |
| Artist | Chris Marrinan |
| Layout by/Layout Coordinator | Tadashi Ehara |
| Format | Soft cover |
| Language | English |
| Location | Albany, CA |
| Copyright | 1984 |
| Pages / Font | 75 pages |
| ISBN | 0-933635-08-7 |
| Catalog Number | Chaosium publication 2305 |
| Chapters | Introduction: The Prophecy
Plot Synopsis: The Brotherhood of the Beast
Chapter I: The Dreamer
Chapter II: The Thing in the Well
Chapter III: Castle Dark
Chapter IV: Sands of Time
Chapter V: Mountains of the Moon
Chapter VI: By the Bay: Part I
Chapter VII: By the Bay: Part II
Chapter VIII: Day of the Beast
Conclusion: Foiling the Brotherhood
Optional Scene 1: Halls of Celaeno
Optional Scene 2: Voice Out of Time Introduction: The Prophecy
Plot Synopsis: The Brotherhood of the Beast
Chapter I: The Dreamer
Chapter II: The Thing in the Well
Chapter III: Castle Dark
Chapter IV: Sands of Time
Chapter V: Mountains of the Moon
Chapter VI: By the Bay: Part I
Chapter VII: By the Bay: Part II
Chapter VIII: Day of the Beast
Conclusion: Foiling the Brotherhood
Optional Scene 1: Halls of Celaeno
Optional Scene 2: Voice Out of Time Show all ▾ |
| Notes | A supplement for Call of Cthulhu roleplaying game. Second printing in 1987 with same catalogue number, slightly altered cover. Reprinted in the anthology Curse of Cthulhu (1990, Chaosium publication 3306). Revised as Day Of The Beast (1998, Chaosium publication 2374 ). |
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