that."

Jennings looked up sharply. "The scent? What do you mean?"

"Senora Gredos," explained Susan quietly, "used a very nice
scent--a Japanese scent called Hikui. She used no other,
and I never met any lady who did, save Mrs. Herne."

"Oh, so Mrs. Herne used it."

"She did, sir. When I opened the door on that night," Susan
shuddered, "the first thing I knew was the smell of Hikui
making the passage like a hairdresser's shop. I leaned
forward to see if the lady was Senora Gredos, and she turned
her face away. But I caught sight of it, and if she isn't
some relative of my last mistress, may I never eat bread
again."

"Did Mrs. Herne seem offended when you examined her face?"

"She gave a kind of start--"

"At the sight of you," said Jennings quickly.

"La, no, sir. She never saw me before."

"I'm not so sure of that," muttered the detective. "Did you
also recognize Mr. Clancy and Mr. Hale as having visited the
Soho house?"