Columbia subject headings:
Harvard subject headings:
Crossword puzzle makers--Fiction
Felton, Cora (Fictitious character)--Fiction.
Women detectives--Fiction.
Princeton subject headings:
Crossword puzzle makers--Fiction.
Extortion--Fiction.
Felton, Cora (Fictitious character)--Fiction.
Fiction.
Murder--Investigation--Fiction.
Older women--Fiction.
Puzzles--Fiction.
Women detectives--Fiction.