This collection - the thirteenth in the "Masters of Detective" series - includes the novel "The Invisible Master", created by the American writer Gwen Bristow in collaboration with her husband Bruce Manning; Carter Brown's work is represented by the novel "The Ex-Wife", which brought him popularity: and the novel "Why Kill the Butler?" introduces readers to the work of the English writer, author of 50 action-packed works, Georgette Heyer, who was called the “Queen of Mystery.”