Aviation is a trope once again. Other interesting topics are jazz, shell-shock, pioneer isolation, and the criminal prosecution of homosexuality. As usual, Greenwood researches well and presents the material in an interesting manner. Unfortunately the mystery itself, its resolution, and the development of the secondary characters were all quite weak. Even returning friends from earlier stories, such as Dot, Bunji, and Inspector Robinson were not well realized in this instance. And Phryne's unwillingness to turn in the unsavory criminals was inexplicable.