Kit Shelby's play was a wonderful success. Though a motion picture, it was one of the finest ever produced, and no expense had been spared to make it the sensation of the season. It was called "Labrador Luck."

The Crane family attended the opening night, as, indeed, all Shelby's friends did, and the verdict was unanimous that never had such a beautiful and finished play been screened. The scenes of ice-bound Labrador were picturesque and fascinating, while the plot was ingenious and thrills plentiful. The audience applauded continuously, for so real was the acting that it seemed as if the performers were actually there.

Benjamin Crane had helped Shelby finance the production, and he realized at once that he would get his money back with interest.

"It's a gold mine, boy!" he said to Shelby, as they were all at the Crane home afterward, "and it must be made into a spoken drama. There's scope for a great play in that plot."

"Marvelous plot," commented Pennington Wise. "All your own, Mr. Shelby?"

"Yes," Kit replied, with frank pride; "it did turn out well, didn't it?"

"And you're going to make a book of it, too, aren't you?" asked Julie.

"Yes, a book, and a serial story and, oh, I'm going to do lots of things with it!"

"Grand opera, maybe!" chaffed Julie.

"Why not?" said Shelby, seriously. "Slighter plots than that have been put into grand opera. It may yet come about."

Without undue conceit Shelby was quite conscious of his great success, and as he walked home with Carlotta from the Crane house, he begged her to consent to his repeated proposals of marriage.

"This thing will make me rich, dear," he said, "and while that sounds mercenary, it does make me glad to have a fortune to offer you."

"But I don't love you, Kit," and Carlotta smiled carelessly at him.

"You will, Carly. You'll have to, 'cause I love you so. Oh, sweetheart, I love you just desperately— I must have you, my little girl, I must!"

"Now, Kit, you wouldn't want a wife who didn't care for you as a woman ought to care for the man she marries. Truly, my heart is still Peter's. I sometimes think I'll never marry, his memory is so vivid and so dear to me."

"Weren't you beginning to care for Blair?"

"N-no; not that way. Of course I was fond of Gilbert, and I'm fond of you, but there's always the thought of Peter between us."

"But, Carly, there's no one you care more for than for me, is there?"

"No, I'm sure of that."

"Then say yes, darling. Even though you won't marry me quite yet, let's be engaged, and truly you'll soon learn to love me. I'll make you!"

But Carlotta wouldn't consent, and Shelby had to be content with her promise to think about it.

"Kit," she said, suddenly, "are those queer detectives going to find out who killed Gilbert?"

"Oh, I suppose they'll fasten it on Mac. Poor chap, to think of his being in jail while we're having all this excitement over my play. But I don't see any other direction for Wise to look. What a funny little thing that Zizi is."

"Yes, but I like her a lot. And she's nobody's fool! Her black eyes take in everything, whether she remarks on it or not. You should have seen her watch you to-night."

"When?"

"At the Cranes', when you were talking about the play."

"She's dramatic herself. She ought to be in the Moving Pictures!"

"Yes, she'd be a film queen at once."

Zizi must have had something of the same idea in her own mind, for the next day she went to see Shelby at his office and asked him if he could give her a chance at film work.

"But you're a detective," Shelby said, amusedly, "what would Mr. Wise do without you?"

"He'd get along all right," Zizi said earnestly. "He's willing I should have a try at a screen career, if you'll take me on."

"I'm not sure I could use you," Shelby returned, "at least not at present. If I do another picture I'll try you out in it."

"Oh, you are going to do another, aren't you?"

"Probably, but not until I've exhausted all the different possibilities of this one."

Zizi showed her disappointment at the failure of her plan, but, after some further talk on general subjects, she went back to the Cranes'.

"Well, Ziz," Wise said to her, as they discussed the case alone, "we're not making our usual rapid headway this time. Rather baffling, isn't it?"

"Everything seems to point to Thorpe, except that I can't think he had motive enough. That foolish jealousy of the plans and suspicion of Blair's stealing his ideas isn't enough to make him commit murder."

"I don't think he did do it, but I can't agree with you that it wasn't a big enough motive. You don't know how the artistic temperament resents anything like that. Nor how it imagines and exaggerates the least hint of it. I think his motive is the strongest point against Thorpe. Who else had any motive at all?"

"That's what we have to find out. And we're going to do it. And, I say, Penny, I want to go to see that medium person the Cranes are so fond of."

"Think she'll help you?"

"Yes, though not by her spiritism. But I suspect she's one big fraud, and I want to be sure."

"Come along, then. No time like the present. Mr. Crane can arrange a session for us."

To Madame Parlato's they went, and soon had the pleasure of seeing that lady in one of her trances.

The room was dimly lighted but not in total darkness. After a silence a faint, low-pitched voice said, "I am here."

"Are you Peter Crane?" asked Zizi, who chose to be spokesman.

"Yes."

"Will you talk to us?"

"Yes, for a short time only."

"Very well, then tell us who killed Gilbert Blair."

"His friend, McClellan Thorpe. Good-by."

"Wait a minute. I own up to being skeptical, is it too much to ask for some proof of your identity, Peter Crane? Will you, can you give some material proof?"

"It is not easy."

"I'm sorry for that, but, oh, I do so want to be convinced. And I can't, unless I have something tangible to take away with me. Do give me something."

There was a silence, and then, apparently from nowhere, a handkerchief fluttered through the air and fell at Zizi's feet.

Amazed, the girl picked it up, and though she could not see it distinctly, she discovered it was a large one, evidently a man's.

Suddenly the medium sat up straight, came out of her trance, and putting on the lights, said, eagerly, "Did you get any message?"

"I should say I did!" Zizi returned, "and a material proof, too. Look!"

"Wonderful!" exclaimed Madame Parlato, as she looked at the white square of linen. "Initialed, too."

"Yes, P.C.," and Zizi scrutinized the embroidery.

Pennington Wise expressed a polite admiration for the medium who could bring about such marvelous results, and the sÉance over, the two departed, Zizi carrying the handkerchief in her bag.

"One of a set of Peter's," Wise said, confidently.

"Of course. Julie or Mrs. Crane will recognize it. Funny, how she thought a crude performance like that would convince us!"

"Mighty well done though."

"Pooh, in a darkened room one can do anything."

"Well, where did she get the handkerchief?"

"Dunno, yet. Maybe the Cranes left it there by chance."

"Oh, no, that won't do. Guess again."

"I think I could if I tried. But we'll see what the family say about it."

Both Mrs. Crane and Julie declared the handkerchief to be one of Peter's own, and, moreover, that it was one of a set Carlotta had embroidered for him just before he went to Labrador. And he had taken the whole dozen with him, of that they were both sure. It had been Carly's parting gift, and Peter had been delighted with it.

"It's too wonderful!" Julie said, amazed. "Now, how do you explain it, Zizi? We know this to be Peter's own handkerchief. We know he took it to Labrador with him. How did it get back here? How get into Madame Parlato's possession? And how appear to you, out of nothingness?"

"Yes," said Benjamin Crane, smiling happily, "answer those questions satisfactorily, or else admit that it is real materialization!"

Wise looked a little nonplused. Positive though he was of the medium's trickery, he could not tell Mr. Crane exactly how it had come about. Materialization was easy enough for a charlatan, but, as had been said, where could she get the handkerchief to do the trick with?

Convinced of the Cranes' honesty, of course, Wise couldn't doubt that Peter had taken all the handkerchiefs with him. His luggage had never been sent home, therefore how did the handkerchief get to New York, and more especially how did it get to Madame Parlato?

"I can't explain it yet," Wise said, frankly, "but I'll find out all about it. To you, Mr. Crane, it seems additional proof of your son's communication through that medium. To me it is additional and very strong proof of her fraud. Now, we'll leave it at that for the present, but I promise to explain it to you soon."

"All right, Mr. Wise, you'll not be offended, I trust, if I say I don't believe you can make good your word. But I'm not surprised at your attitude. Some minds are almost incapable of belief in the occult, and will accept the most absurd and far-fetched explanations rather than the simple and plausible one of spirit communication. I can't understand such a mental attitude, but I've met so many like you that I'm obliged to recognize its existence."

"Oh, Mr. Wise," Mrs. Crane said, "it does seem so strange that a clear-headed, deep-thinking man like yourself prefers to believe that Madame Parlato could get Peter's handkerchief and could produce it so mysteriously for you rather than the rational belief that Peter sent it himself."

Zizi looked at the speaker with kindly eyes.

"Dear Mrs. Crane," she said, "what will hurt me most when we expose that medium's fraud is the fact of your disappointment."

"Don't worry about that," smiled Benjamin Crane, "you haven't exposed her yet! Meantime, I shall incorporate this experience of the handkerchief in my next book."

"Oh, don't!" cried Zizi, involuntarily. "You'll make yourself a laughing-stock——"

She paused, unwilling to hurt his feelings.

But so assured of his beliefs was Benjamin Crane that he shook his head and said:

"No fear of that, child. I'll take all risks. Have you any idea how my book has been received? It's just gone into another big edition, and my publishers are clamoring for my second book, which is nearly finished. But to return to the case of McClellan Thorpe. Did Peter tell you——"

"Yes," Wise said, "according to Madame Parlato, the spirit of your son said that Thorpe is the criminal, and it was as proof of identity that Zizi received the handkerchief."

"Fine," said Crane, nodding his satisfaction, "I think I'll use that sÉance for the finale of my book, and get it in press at once."

"Do, dear," said his wife, "as far as the handkerchief is concerned. But don't put in the book that Mac killed Gilbert."

"Oh, no, certainly not. In the first place, we're all agreed that though Peter believes that, it is a mistake on his part; that is, it may be a mistake. Don't let it influence you too much, Mr. Wise."

Penny Wise laughed outright. He couldn't help it.

"No, sir," he promised, "I won't!"

"But have you any other suspect?"

"I'd rather not answer that question quite yet, Mr. Crane."

"All right, take your own time. I've confidence you'll do all you can, but my hopes of your success are dwindling."

"Don't feel that way, on the contrary, I'm beginning to see at least a way to look for another suspect."

"Look hard, then. For I want to get Mac cleared as soon as it can be brought about."

"We'll hope to do that. I'm going over to the Studios now, and I've a notion I'll discover something."

Accompanied by Zizi, Wise went to the home that Blair and Thorpe had occupied, and which was now in charge of the police.

The detective set himself to the task of looking over old letters and papers in hope of finding out some secret of the dead man's past.

Zizi flitted about the rooms, looking for nothing in particular, and everything in general.

"I've sized up his medicines," she said, coming from Blair's bedroom into the studio where Wise sat at the desk.

"His cough syrup hasn't been touched lately. The dried up stickiness of the cork shows that. And one or two other bottles are in the same condition. But in the waste basket in his bedroom I found this."

She held up an empty bottle that was labeled soda mints.

"There's a new full bottle in the medicine chest," she went on, "and as this was in the basket, mayn't it be that he took the last ones, and——"

"And they were poisoned!"

"One of them was. See, somebody had put a poisoned one in among the others."

"That leads back to Thorpe, who else could do that?"

"And we don't know that anybody did, only it might have been."

"Can you smell any prussic acid in the vial?"

"No," and Zizi sniffed at it, "I seem to think I do, but I daresay it's my vivid imagination. Do you suppose a chemist could discern any?"

"Probably not, but we might make a try at it. Pretty slim clue, anyway, Ziz."

"I know it, but I have a hunch it's the real thing. You see, Blair was in the habit of taking these things——"

"How do you know?"

"Carlotta Harper told me. I've quizzed her a lot about Mr. Blair's personal habits, and he always carried soda mints in his pocket, and took one now and then. So, as there was no soda mint bottle found in his pockets, and this was in the basket, it's a logical deduction that he finished this bottle that night that he died. And they all think the poison was given to him through some simple trick, so why not this?"

"It may be. It very likely is. But where does it get us?"

"Dunno yet. But, say it was done that way, it needn't have been done here. Maybe the murderer put a poisoned mint in the bottle when they were somewhere together."

"How could he?"

"Oh, lots of ways. Say Blair had his coat off, playing golf or billiards, or——"

"He'd carry such a bottle in his waistcoat pocket, I think."

"Well, it's all surmise. The thing to do is to begin from the other end. Who had a motive?"

"That's what I'm trying to trace. Nothing doing as yet. Hello, here's that old letter from Joshua, the guide. Look at it! It is in a small, cramped hand, and you know the one purporting to be from him later was in a big, sprawly hand. Somebody faked that letter!"

"Well, there's something to work on, then."

"But maybe Thorpe did it."

"Not he. Why should he? He had nothing to do with that Labrador trip."

"What was the letter about, the other Joshua letter?"

"Advising him not to try to bring Peter Crane's body down to New York, or to postpone the matter, or something like that."

"Queer business, that. Why should anybody want to fake a letter like that?"

"I don't believe anybody did. More likely some one else wrote for the guide. They're an ignorant lot, and writing is an unwelcome task to them."

They were still looking at the guide's letter when Shelby came in.

"I heard you were here," he said, "and thought it would be a good time to come around. I want to see if there's anything in Blair's papers that would help to turn suspicion away from Mac Thorpe. I don't believe that man did it, and I wish we could free him."

"That's what we're after," and Wise made room for Shelby to sit beside him at Blair's desk.

But though they made systematic search of all letters they found none other than friendly. There were some from his mother and sister, pathetic ones, telling of their ill health, for both were invalids.

They had not come East on learning of Blair's death, for they could not well stand the trip, and, too, there was no real reason for their coming. After the police investigation was over Blair's effects were to be sent to them, but for the present everything remained as it was found at his death.

"Let me help you, if I can," Shelby went on to Wise. "You know Blair and I were chums. Poor Gilbert, and Peter Boots, too, both gone, and both by such tragic means. I don't know which death was the worse."

Zizi showed him the small bottle she had found, and asked his opinion of her theory about it.

"What an ingenious notion," Shelby exclaimed; "yes, it might be the truth, of course, but a dozen other ways might have been used either."

"Such as what?" asked Wise, "it's always a help to talk these things over."

"Well, granting that some one administered poison to Blair, secretly, mightn't he have put it in anything that Blair was about to eat or drink?"

"Not this poison," objected Wise. "It acts too quickly. Whatever plan was adopted, it was some scheme by which Blair would take the poison unknowingly, but naturally. As Zizi says, if it had been put in some one of his bottles of medicine, he must take it, sooner or later."

"Yes; well, then say it was put in a cigarette, no that's foolish; why, hang it all, Wise, don't you see there's no plausible theory except that some one put it in a drink Blair took just before going to bed, or even after he was in bed."

"Where's the glass, then?"

"That's just the point. What's the answer, except that Thorpe washed it and put it away? Of course, Blair would take a drink Thorpe offered him."

"Also, he might have taken a soda mint just as he went to bed or after," said Zizi.

"Yes," agreed Shelby, thoughtfully. "He might have done so, but could one introduce poison into one of those things? They're quite hard, you know."

"Yes, it could be done," Wise declared. "I've heard of such a thing before. The little pellet could be soaked in the poison——"

"That would make it taste, and he wouldn't swallow it," Shelby said.

"True. Well, I think, with a hypodermic needle, the poison could be got into the mint."

"Maybe, but I doubt it. However, I don't know much about such things. You're doubtless experienced."

"Yes, I've had a lot of poison cases. And, if we give up all thought of the soda mint, it does come back to a drink of some sort mixed by Thorpe."

"Or Blair might have mixed his own drink, and Thorpe added the poison, unnoticed."

"But I want to get away from Thorpe," Zizi said, her eyes anxious and worried.

"So do we all," returned Shelby gravely. "But where can we look?"

"Where, indeed?" echoed Penny Wise.