From publisher blurb: Monster of the Month #1 — January 2020 Spirits of Madness are a type of disease spirit which lurks near places associated with the Moon Rune. This new bestiary entry includes: Description of the behavior, powers, & possible locations of madness spirits Gamemaster advice on using disease spirits The Madness disease, and sample afflictions ranging from paranoia to chaophilia An example narrative describing an adventurer's combat with a madness spirit