The Mystery Queen in Bloomington, MN

Yes. I think it's a good idea, Freddy. And the perfume? Did Durwin or the Inspector tell you anything about the perfume? No, I can see by your blank stare that they didn't. Listen, Freddy, and store this knowledge in your blessed brain, my son. It is a clue, I am sure," and Halliday forthwith related to his attentive listener details concerning the strange perfume which had impregnated the clothes of the dead man. "And Sir Charles hated perfumes," he ended, emphatically; "he didn't even like Lillian or Mrs. Bolstreath to use them, and they obeyed him.