All three heirs to the Garnach family line have gone missing, sending the household into a panic. A Case of Consumption is an adventure for expert characters who have developed a reputation as people who can get things done in the Northern Reach. The Garnach family is influential in the Reach, but they’re at their wits’ end when it comes to rescuing their children. More an exploration than a mystery—the culprit’s motives and plans become clear after a rudimentary investigation, which leads the player characters to the true danger; a dark, and mysterious cave on the shores of Mirror Lake. The characters complete the adventure when they discover the fate of the Garnach children and escape the horrors uncovered in the fetid darkness into which they must go.