"Those who have not already made the acquaintance of Hildegarde should make haste to do so, for she is one of the world's shrewdest and most amusing detectives."— The New York Times

Miss Hildegarde Withers, middle-aged school teacher and amateur sleuth, stars in five short stories by Stuart Palmer. Miss Withers, her odd hats, and her ever-present umbrella have been featured in seven motion pictures and seventeen full-length novels, which, like the shorts, are characterized by madcap stories of murder and brilliant deduction.

Included in this collection:
The Puzzle of the Scorned Woman (aka The Riddle of the Lady from Dubuque)
The Riddle of the Yellow Canary
A Fingerprint in Cobalt (aka The Riddle of the Blue Fingerprint)
The Riddle of the Doctor's Double
Green Fire (aka The Riddle of the Green Ice)