Allmen meets a cultured gentleman of around his age in a bar – Adrian Weynfeldt. His family name, of course, is one the art detective is familiar with. Their encounter marks the beginning of an unusual friendship. A short while later, when Weynfeldt notices a picture is missing from his collection, he consults Allmen. Weynfeldt’s eccentric circle of friends seems reluctant to talk, all except the bookseller who specialises in art titles. But before long, she’s no longer able to, and Allmen is facing his first murder case.