"So you've changed ident.i.ties again!"

"Surely you don't mind?" he said, grinning over the evasion.

"But you denied being Ismay aboard the Autocratic."

"My dear lady, you couldn't reasonably expect me to plead guilty to a crime which I had not yet committed."

"Oh, get down to business!" Staff interrupted impatiently. "You're wasting time--yours as well as ours."

"Peevish person, your young friend," Ismay commented confidentially to Alison. "Still, there's something in what he says. Shall we--ah--begin to negotiate?"

"I think you may as well," she agreed coldly.

"Very well, then. The case is simple enough. I'm here to offer to secure the return of the Cadogan collar for an appropriate reward."

"Ten thousand dollars has been offered," she began.

"Not half enough, my dear lady," he interposed. "You insult the necklace by naming such a meagre sum--to say nothing of undervaluing _my_ intelligence."

"So that's it!" she said reflectively.

"That is it, precisely. I am in communication with the person who stole your necklace; she's willing to return it for a reward of reasonable size."

"She? You mean Miss Searle?"

The man made a deprecating gesture. "Please don't ask me to name the lady...."

"I knew it!" Alison cried triumphantly.

"You puppy!" Staff exclaimed. "Haven't you the common manhood to shoulder the responsibility for your crimes yourself?"

"Tush," said the man gently--"tush! Not a pretty way to talk at all--calling names! I'm surprised. Besides, I ought to know better than you, acting as I do as agent for the lady in question."

"That's a flat lie," said Staff. "If you repeat it--I warn you--I'll jump you as sure 's my name's Staff, pistol or no pistol!"

"Aren't you rather excited in your defence of this woman?" Alison turned on him with a curling lip.

"I've a right to my emotions," he retorted--"to betray them as I see fit."

"And I," Ismay put it, "to my freedom of speech--"

"Not in my rooms," Staff interrupted hotly. "I've warned you. Drop this nonsense about Miss Searle if you want to stop here another minute without a fight. Drop it! Say what you want to say to Miss Landis----and get out!"

He was thoroughly enraged, and his manner of expressing himself seemed to convince the thief. With a slight shrug of his shoulders he again addressed himself directly to Alison.

"In the matter of the reward," he said, "we're of the opinion that you've offered too little by half. Twenty thousand at the least--"

"You forget I have the duty to pay."

"My dear lady, if you had not been anxious to evade payment of the duty you would be enjoying the ownership of your necklace today."

As he spoke the telephone-bell rang. Staff turned away to his desk, Ismay's voice pursuing him with the caution.

"Don't forget about that open drawer--keep your hands away from it."

"Oh, be quiet," returned Staff contemptuously. Standing with his back to them, he took up the instrument and lifted off the receiver.

"h.e.l.lo?" he said irritably.

He was glad that his face was not visible to his guests; he could restrain a start of surprise, but was afraid his expression would have betrayed him when he recognised the voice at the other end of the line as Iff's.

"Don't repeat my name," it said quickly in a tone low but clear. "That is Iff. Ismay still there?"

"Yes," said Staff instantly: "it's I, Harry. How are you?"

"Get rid of him as quick 's you can," Iff continued, "and join me here at the Park Avenue. I dodged down the fire-escape and caught his motor-car; his chauffeur thinks I'm him. I'll wait in the street--Thirty-third Street side, with the car. Now talk."

"All right," said Staff heartily; "glad to. I'll be there."

"Chauffeur knows where Nelly is, I think; but he's too big for me to handle alone, in case my foot slips and he gets suspicious. That's why I need you. Bring your gun."

"Right," Staff agreed promptly. "The club in half an hour. Yes, I'll come. Good-bye."

He turned back toward Ismay and Alison, his doubts resolved, all his vague misgivings as to this case of double ident.i.ty settled finally and forever.

"Alison," he said, breaking in roughly upon something Ismay was saying to the girl, "you've a cab waiting outside, haven't you?"

Alison stared in surprise. "Yes," she said in a tone of wonder.

Staff paused beside the divan, one hand resting upon the topmost of a little heap of silken cushions. "Mind if I borrow it?" he asked, ignoring the man.

"No, but--"

"It's business--important," said Staff. "I'll have to leave you here at once. Only"--he watched Ismay closely out of the corners of his eyes--"if I were you I wouldn't waste any more time on this fellow. He's bluffing--can't carry out anything he promises."

Ismay turned toward him, expostulant.

"What d' you mean by that?" he demanded.

"Miss Searle has escaped," said Staff deliberately.

"No!" cried Ismay, startled and thrown off his guard by the fear it might be so. "Impossible!"

"Think so?" As he spoke Staff dextrously s.n.a.t.c.hed up the uppermost pillow and with a twist of his hand sent it whirling into the thief's face.

It took him utterly unawares. His arms flew up too late to ward it off, and he staggered back a pace.

"Lots of impossible things keep happening all the time," chuckled Staff as he closed in.