The Baltic storyteller and poet Werner Bergengruen (1892-1964), who was one of the most widely read German writers even in the 1960s, has rarely been associated with fantastic literature. This literary study makes it clear for the first time that Bergengruen is among the most productive and best authors of German-language fantasy. His diverse contributions to the genre are analyzed and interpreted, as well as examined in terms of their development. This comprehensive documentation of the supernatural in Werner Bergengruen's work is complemented by a complete bibliography of his works and a thoroughly annotated list of his fantastic publications.