The house has stood abandoned on its lonely hilltop, brooding quietly over the ruins of a once thriving town for decades. No one has lived within its walls since the night a terrific storm flooded the coastal town below, but now, the mansion has attracted the attention of a curious group of adventurers. What is the truth behind the tragic past that empowers the evil that grips the mansion today. Malevolence is a horror-themed adventure for 3rd-level characters featuring sinister new monsters, mysterious magical items and spells to discover, and a fully-detailed haunted house for players to explore, exorcise, and endure.