The book consists of thirteen pieces on various subjects, including writers H. P. Lovecraft (two essays), Robert E. Howard (also two essays), and Edgar Rice Burroughs, actor Douglas Fairbanks, Sr., silent movies, pseudohistory, pseudobibliographica, barbarians real and fictional, the Scopes Trial, the ancient tyrant Dionysius I of Syracuse, and the author himself.
According to the pseudohistorical Dossiers Secrets d'Henri Lobineau and related documents, Sigebert IV, on the assassination of his father Dagobert II, was rescued by his sister and smuggled to the domain of his mother the (otherwise unknown) Visigoth princess, Giselle de Razès in Rennes-le-Château.