This book, written in German, presents an interdisciplinary study of the south-eastern part of Denmark – South Zealand and the islands Lolland, Falster and Møn – as a border area between Danes, Saxons and Slavs from the 9th to the 13th century. In the archaeological evidence it is evident that the Slavic-inspired Baltic ware completely displaces the local ceramic tradition on the islands. In the period concerned, there is evidence of dynastic connections between Slavs and Danes at the same time as violent conflicts were taking place across the Baltic Sea. On Lolland, Falster and Møn there are Slavic place names, and in written sources the contours of Slavic noble families on Lolland and Falster can be traced through several hundred years, but otherwise the Slavs who lived on the Danish islands into the 13th century were completely assimilated within a short time.