Columbia subject headings:
Detective and mystery stories, American--History and criticism.
Detective and mystery stories, English--History and criticism.
Spy stories, English--History and criticism.
Harvard subject headings:
Detective and mystery stories, English--History and criticism.
Spy stories, English--History and criticism.
Princeton subject headings:
Detective and mystery stories, American--History and criticism.
Detective and mystery stories, English--History and criticism.
Literary form.
Popular literature--History and criticism.
Spy stories, English--History and criticism.