From the introduction: Something horrible stalks the dark streets of Maus. Nobles are being found torn apart and mutilated in back alleys and crucified on streetlamps. The Merchant’s Guild of Maus is nervous and seeks help from brave adventurers to solve the mystery of who or what is butchering the upper class of the biggest metropolitan city in the North. A Dave Arneson’s Blackmoor one round adventure for players levels 5-13. The third installment of the series: “Infernal Darkness” and part of the themed modules, “The Businessmen of Blackmoor.” WARNING: This adventure contains many adult themes and graphic circumstances; it is recommended for mature audiences. Player discretion is advised.