By a well-trodden road lies the estate of the Eryx family. At some point the estate was converted into a roadside inn. The merchant Robert E. Wardlove has received an urgent letter from his daughter Derleth. She begs of her father to arrive in haste to the faraway inn and take her back home safely for the Evening of Still Streets draws near... Enigma of the Eryx Estate is a break from the usual dungeon crawls of the Shadowdark system recommended for characters of lvls 1-3. During this adventure players get to solve a murder and the mysteries that surround it. Exploration and intrigue are emphasized as player characters gain XP for uncovering secrets. Combat is in a more minor role during this adventure, but if the players don't figure out the mystery by midnight, they might be in a fight for their lives. The adventure is designed for ease of running with punctual room and character descriptions.