The goddess Erathis has never seemed the sort to demand the sacrifice of mortals in exchange for safe trade routes, but that’s exactly what her high priest has demanded. When a local ruler asks the characters to investigate the high priest, a chain of events is set in motion that could shake the city of Wyllea, and the church of Erathis, to its core. This adventure makes extensive use of roleplaying encounters and skill challenges, with fewer tactical combat encounters. There is a substantial focus on politics and intrigue. The Tariff of Relkingham is written for 3rd level PCs, but contains advice for lowering or raising the starting level from 2-4. It also contains a system for calculating an advantage or disadvantage in the final fight based on the players' actions during the adventure.