From publisher blurb:
The Den of the Red Masks is the second adventure which takes place in Times Undreamed Of, an original setting compatible with Shadowdark RPG or easily adaptable to your preferred system. When combined with the free Shadowdark Quickstart Rules, The Den of the Red Masks gives you all you need to run a 3 hour game session.
Taking their ease in one of the taverns in the Wet Warrens, the dank, rogue-ridden district of the city-state of Ib-Hiore, the players are sought out by a mysterious pair of strangers. The party is tasked with delving into the old headquarters of the once-legendary faction of thieves known as the Red Masks, to discover what caused the once-powerful thieves’ guild to disappear in a single night.
The Den of the Red Masks follows on from our first adventure, Beneath the Arena of Blood, and further expands and develops the city of Ib-Hiore and its many shadows and secrets. The adventure also features unique monsters and enemies, random tables for loot and events, and a mini toolkit of instructions and random tables to help you bring the Wet Warrens, a vibrant den of criminals and cutthroats, to life.