A small but strongly built castle on the banks of the Dessarin River, Rivergard Keep is one of the Haunted Keeps of the Sumber Hills. A taciturn mercenary lord named Jolliver Grimjaw and his band of sells words occupy the keep. They are repairing the old castle and protecting trade along the river from the depredations of monsters and bandits, or so they claim. In fact, Rivergard Keep is the secret stronghold of the Cult of the Crushing Wave. Grimjaw and his followers are the very outlaws from whom they claim to be defending trade.