From the back cover:
Marienburg: Sold Down the River is a complete and incredibly detailed city-sourcebook for Warhammer Fantasy Roleplay, containing everything a GM needs to run adventures and campaigns in this unique city.
It includes descriptions, maps, and histories of Marienburg and the surrounding Wasteland, information on Marienburg's politics, religions, laws and criminals, as well as details of eight of the city's most important districts, over forty individual locations and almost sixty fully-described non-player characters, all with connections and secrets that can be used to create plots and adventures. All the elements are woven together to create one of the most complete, coherent and fascinating city-sourcebooks ever released for any RPG.
Plus there's a complete scenario and fifteen adventure seeds, rules for trading and smuggling, information on how to generate Wastelander PCs, atmospheric artwork that brings Marienburg and its inhabitants to life, an incredible panoramic poster-map of the entire city, and more.