From publisher blurb: The pounding surf sings, matching the pounding in my mind. Hard to think, easy to feel, but the Horn in my hands longs for the Outsider’s song, urges me to call to the deeps. The Doom waits, listens, hears. Soon, all within the hated city will feed the Doom and will dwell within the Outsider’s embrace. Soon. Soon. I set the horn to my lips and blow. The Outsider’s Doom is a dungeon and urban crawl adventure written for levels 1-5. In it, the players’ initial exploration of a desecrated dwarven tomb leads them to the High City of Slatewall, where conflicts between the city’s factions and riots that foreshadow an impending blood feud mask a dark plot by the cult of the forbidden Outsider to bring the entire city down into their god’s dark depths. The campaign is designed to mix dungeons with investigatory social play as players unwrap deeper and deeper layers of treachery within the outwardly coherent society of the dwarves. However, individual sections of this module can also be used as independent one-shots telling a self-contained single-session story. The city of Slatewall itself is a busy, bustling location full of random encounters and multiple sites of interest and can be used as a locale in most campaigns.