Columbia subject headings:
Literature, Modern--History and criticism.
Riddles in literature.
Riddles in motion pictures.
Harvard subject headings:
Detective and mystery films--History and criticism
Detective and mystery stories--History and criticism
Riddles in literature.
Riddles in motion pictures.
Princeton subject headings:
Detective and mystery films--History and criticism.
Detective and mystery stories--History and criticism.
Riddles in literature.
Riddles in motion pictures.