"Thanks."

He slackened his pace, an uneasy frown appearing between his eyes.

"I am almost afraid to tell Sara the news we have had from town this morning. She is so opposed to notoriety and all that sort of thing. Poor girl, she's had enough to drive one mad, I fear, with all that wretched business of a year ago."

Hetty stopped in her tracks. She went very white.

"What news, Mr. Wrandall?"

"They say they have stumbled upon a clew,--an absolutely indisputable clew. Smith had me on the wire this morning. He is the chief operative, you understand, Miss Castleton. He informs me that his original theory is quite fully substantiated by this recent discovery. If you remember, he gave it as his opinion a year ago that the woman was not--er--I may say, of the cla.s.s catalogued as fast. He is coming out to-morrow to see me."

Things went suddenly black before her eyes, but in an instant she regained control of herself.

"They have had many clews, Mr. Wrandall," she complained, shaking her head.

"I know," he replied; "and this one may be as futile as the rest.

Smith appears to be absolutely certain this time, however."

"I understood that Mrs. Wrandall--I mean Mrs. Challis Wrandall--refused to offer a reward," said Booth. "These big detective agencies are not keen about--"

"There is a ten thousand dollar reward still standing, Brandon,"

said Mr. Wrandall.

Again the girl started.

"That isn't generally known, sir," observed the painter. "Leslie told me there was no reward."

"It was privately arranged," explained Leslie's father.

They came in sight of the house at that moment, and the subject was dropped, for Sara was approaching them in earnest conversation with Mr. Carroll, her lawyer.

They met at the edge of the lower basin, where the waters trickled down from an imposing Italian fountain on the level above, forming a deep, clear pool to which the lofty sky lent unfathomable depths.

To the left of the basin there was a small tea-house, snug in the shadow of the cypresses that lined the crest of the hill. A series of rough stone steps wound down to the water's edge and the boathouse.

"Mr. Carroll is the bearer of startling news, Mr. Wrandall," said Sara, after the greetings. There was a trace of the sardonic in her voice.

"Indeed?" said Mr. Wrandall gravely.

"I was not aware, sir," said the old lawyer stiffly, and with a positive glare, "that your detectives were such unmitigated a.s.ses as they now appear to be."

"I fail to understand, Mr. Carroll," with considerable loftiness.

"That confounded rascal Smith called to see me this morning, sir.

He is a rogue, sir. He--"

"I beg your pardon, Mr. Carroll," protested Mr. Wrandall, in a far from conciliatory manner.

"It seems, in short, that he has been working on a very intimate clew," said Sara, staring fixedly at her father-in-law's face.

"So he informed me over the 'phone this morning," said he, rather taken a-back. "However, he did not go into the details. I am here, Sara, to tell you that he is coming out to-morrow. I want to ask you to come over to my place at--"

"That is out of the question, sir," exclaimed Mr. Carroll vehemently.

"My dear Mr. Carroll--" began Wrandall angrily, but Sara interrupted him to suggest that they talk it over in the tea-house. She would ring for tea.

"If you will excuse me, Mrs. Wrandall, I think I will be off," said Booth.

"Please stay, Mr. Booth," she urged. "I would like to have you here."

She fell behind with Hetty. The girl's eyes were gla.s.sy.

"Don't be alarmed," she whispered.

Booth pressed the b.u.t.ton for her. "Thank you. You will be surprised, Mr. Wrandall, to hear that the new clew leads to a member of your own family."

Mr. Wrandall was in the act of sitting down. At her words he dropped.

His eyes bulged.

"Good G.o.d!"

"It appears that Mr. Smith suspects--ME!" said she coolly.

Her father-in-law's lips moved, but no sound issued. His face was livid.

"The stupid fool!" hissed the irate Mr. Carroll.

There was deathly silence for a moment following this outburst.

Every face was pale. In Hetty's there was an expression of utter horror. Her lips too were moving.

"He has, it seems, put one thing and another together, as if it were a picture puzzle," went on Sara. "His visit to Mr. Carroll this morning was for the purpose of ascertaining how much it would be worth to me if he dropped the case--NOW."

"The infernal blackmailer!" gasped Mr. Wrandall, finding his voice.

"I will have him kicked off the place if he comes to me with--My dear, my dear! You cannot mean what you say."

He was in a shocking state of bewilderment.

"I'd advise you to call off your infernal blackmailer, Mr. Redmond Wrandall," snarled Mr. Carroll, pacing back and forth.

"My dear sir," stammered the other, "I--I--do you mean to imply that I know anything about this infamous business?"

"He is your dog, not ours," declared the lawyer, pacing the brick floor.

"Peace, gentlemen," admonished Sara. "Let us discuss it calmly."

"Calmly?" gasped Mr. Wrandall.

"Calmly!" snapped the lawyer.

"At least deliberately. It appears, Mr. Wrandall, that Smith has been working on the theory all along that it was I who went to the inn with Challis. You recall the description given of the woman? She was of my size and figure, they said at the time. Well, he has--"