can get on. Who gave you my address?"

At the question, so abruptly asked, Mollie felt herself blushing again.
It was delightful to know that she could still blush. "Oh--I... that is,
I asked Scotland Yard "

She bestowed a swift, half-veiled glance at her interrogator, but he
offered her no help, and:

"They wouldn't tell me," she continued. "So--I had to find out. You see,
I heard you were trying to get information which I thought perhaps I
could give."

"So you went to the trouble to find my private address rather than to
the nearest police station," said Kerry. "Might I ask you from whom you
heard that I wanted this information?"

"Well--it's in the papers, isn't it?"

"It is certainly. But it occurred to me that someone... connected might
have told you as well."

"Actually, someone did: Miss Margaret Halley."

"Good!" rapped Kerry. "Now we're coming to it. She told you to come to
me?"

"Oh, no!" cried Mollie--"she didn't. She told me to tell her so that she
could tell the Home office."

"Eh?" said Kerry, "eh?" He bent forward, staring fiercely. "Please tell
me exactly what Miss Halley wanted to know."

The intensity of his gaze Mollie found very perturbing, but:

"She wanted me to tell her where Mrs. Sin lived," she replied.

Kerry experienced a quickening of the pulse. In the failure of the
C.I.D. to trace the abode of the notorious Mrs. Sin he had suspected
double-dealing. He counted it unbelievable that a figure so conspicuous
in certain circles could evade official quest even for forty-eight
hours. K Division's explanation, too, that there were no less than
eighty Chinamen resident in and about Limehouse whose names either began
or ended with Sin, he looked upon as a paltry evasion. That very morning
he had awakened from a species of nightmare wherein 719 had affected
the arrest of Kazmah and Mrs. Sin and had rescued Mrs. Irvin from the
clutches of the former. Now--here was hope. 719 would seem to be as
hopelessly in the dark as everybody else.

"You refused?" he rapped.

"Of course I did, Inspector," said Mollie, with a timid, tender glance.
"I thought you were the proper person to tell."

"Then you know?" asked Kerry, unable to conceal his eagerness.

"Yes," sighed Mollie. "Unfortunately--I know. Oh Inspector, how can I
explain it to you?"

"Don't trouble, miss. Just give me the address and I'll ask no
questions!"

His keenness was thrilling, infectious. As a result of the night's
"b