CHAPTER IV

  MR. BLACKFORD'S CLUE

  "Hope I didn't disturb any family party," apologized Mr. Blackford, whenhe and Will called at the Stonington home a little later that evening.

  "Not at all," greeted Amy. "Come in. We are planning another season ofactivity."

  "I might have guessed," answered the young man who had been sopeculiarly involved in the five hundred dollar bill mystery. "YouOutdoor Girls are always doing something novel. What is it this time?"

  "A winter camp!" they cried in chorus.

  "List to the pretty maidens!" sung Will, mockingly, as he assumed atheatrical attitude.

  "Behave!" ordered his sister, whereat Will proceeded to contort himselfin various ways to the great amusement of the girls.

  "That's fine!" exclaimed Mr. Blackford--"fine that you can go camping, Imean--not Will's circus act. But I must apologize for coming in on youthis way. I happened to have some business in town, and as I received acurious bit of news I thought you girls might be interested. It's aboutmy missing sister," he added, simply. "I've told you how I have beensearching for her.

  "Perhaps I shouldn't bother you with my family troubles," he continued,hesitatingly, "but, somehow, ever since you helped me out so in thematter of that five hundred dollars, I have felt as though you didreally take an interest in me, as I do in you. And, as I haven't anyreal folks of my own--so far," and he smiled, "naturally I come to you.Shall I go on?"

  The girls nodded. After making the acquaintance of the young man in themanner related in our first volume, they had learned the queer fact ofMr. Blackford having a sister of whom he had lost track. At one time hehoped it might develop that she was the strange girl who fell out of thetree, but it was not so. This girl, Carrie Norton, had, after spendingsome time in Deepdale, departed to live with a distant relative.

  Mr. Blackford had engaged a firm which made a specialty of locatingmissing persons to look for his sister, but so far there had been noresult.

  "And it doesn't look as though this were going to be very promising,"the young man went on. "You know this searching firm has been delvingamong my wood-pile relations, as I call them, looking for clues," hewent on. "They are getting all the old documents, bits of familyhistory, descriptions, and so on, that they can lay hands on. It allhelps, in a way, but we haven't had much luck so far. But you may beinterested in something that just came up, and you may be able to helpme.

  "I've been traveling about, in connection with my business, and as Iknew I would 'make' this town to-night, I had all my mail sent here.Imagine my surprise when I got to my hotel, a little while ago, to findthe most promising clue yet."

  "What is it?" asked Betty, eagerly.

  "I thought you might be interested," said the young man, "and that iswhy I called at your house," and he nodded to Will.

  "You had gone out," remarked Will to Grace, "so I asked dad where, asthe maid said you'd all been in the library. Then I called up here," andhe nodded to Amy.

  "Glad you did," she returned. She seemed to have forgotten the troubleof the afternoon.

  "Well," went on Mr. Blackford, "I feared it was a sort of imposition tocome, and----"

  "I told him it wasn't at all," interrupted Will.

  "So on I came," proceeded the young business man.

  "But what is the clue?" asked Grace, interestedly.

  "This," was the reply, as he took some papers from his pocket. "But it'sa clue that----"

  "Isn't a clue," put in Will.

  "Because----"

  "It breaks off in the middle."

  "Oh, Will, let him tell it; can't you?" demanded Grace, impatiently. "Wedon't know whom we're listening to."

  "Well, to be brief," said Mr. Blackford, "the firm I have engaged, theother day, wrote me that they were on the track of my sister. They feltsure they were going to find her, and I was very hopeful.

  "It seems that they had found some old documents in the attic of a housewhere some distant relatives live. They wrote me they were sending themon, and--here they are!"

  He brought out a bundle of time-stained and yellow papers, and spreadthem on the table.

  "Gracious!" cried Will. "Your sister must be quite elderly to have suchancient documents refer to her."

  "No," said Mr. Blackford, "she is younger than I am, I believe. But Ihave no certain knowledge of that. Anyhow, this is part of a letterwritten about the girl whom I have every reason to believe is my sister.And the part that is most interesting----"

  "Is where----" began Will.

  "Can't you keep still?" begged his sister.

  "Has 'oo dot any tandy?" and he imitated little Dodo.

  "Oh, take that!" and Grace passed him a caramel. "Now, let's hear whatit is, Mr. Blackford."

  "There is a part of the letter which says this," went on Mr. Blackford,and he proceeded to read:

  "'You can always identify the girl because she has a most peculiarbirth-mark on----'"

  He ceased reading.

  "Well, go on, please," requested Betty. "This is getting interesting."

  "It isn't _getting_ interesting--it's so already," declared Mollie. "Goon, please, Mr. Blackford, tell us what sort of birth-mark your sisterhas."

  "That's just the trouble," he remarked, ruefully. "I can't do it."

  "Why not?" Betty wanted to know.

  "Because, just at that point--where the description of the birth-mark,and its location, should appear--the letter is torn. A corner is gone.I have no more idea of what sort of identifying mark my sister has, thanhave you. It is worse than before, for I saw hope ahead of me, only tosee it disappear now.

  "I feel sure that the girl referred to in the old letter is my sister;but how can I identify her, in case I meet her, until I know what sortof a mark she has, and where it is?"

  "You can't!" declared Will, positively.

  "And that makes it all the more tantalizing," went on Mr. Blackford."They even--that firm I spoke of--they even had located the part of thecountry where it might be possible my sister was, and now to have itfail this way----"

  "Where did they say she might be?" asked Amy.

  "Somewhere up in Canada. But it is rather vague. If only that piece wasnot torn off the edge of the letter!"

  "Can't you find it somewhere?" asked Mollie. "Maybe in forwarding it thepeople you hired tore it by accident."

  "I thought of that, so I telephoned as soon as I got this letter, askingwhere the missing piece was. I got word back that they knew nothingabout it."

  There was silence for a moment, while they all looked at the mutilateddocument Mr. Blackford held up. It showed a tear across one corner, atear that disposed of the most vital piece of information contained onthe whole paper.

  "That's too bad," spoke Amy, sympathetically.

  "Yes," agreed Mollie, as she put back a stray and rebellious lock ofhair, "it spoils all your plans, I suppose, Mr. Blackford."

  "In a way, yes. But I'm not going to give up. I'm going to find outwhere they got this document from, and go there. It may have been insome old attic trunk, among some--love letters--and the missing piecemay be there."

  "Without it you're all at sea," declared Will. "You don't know what sortof a mark to look for, nor where it might be."

  "And he can't very well go around asking all the girls he meets if theyhave peculiar birth-marks," commented Mollie.

  "Well, I hardly know why I told you my troubles," said the young man,"but----"

  "Why shouldn't you?" asked Betty, pleasantly. "We are interested in you,of course, ever since----"

  "That five hundred dollar bill you thought was gone for good," addedAmy. "But if we hear of anything----" and she paused suggestively.

  "I wish you'd let me know!" exclaimed Mr. Blackford. "I know you girlsare very lucky. You've proved it several times. Now if you happen tohear of anyone who would fit what description I have of my sister--andit isn't much, to tell the truth--or if you think you see anyone whoresembles me, or who has a peculiar birth-mark, just let me
know. Youtravel around so much, and you meet so many strange people----"

  "We do seem to," agreed Grace.

  "Well, just let me know," finished Mr. Blackford.

  For some little time they talked of the curious happening, and theperversity of fate that should provide for such a vital piece of theletter being missing. Then, after Amy had provided refreshments, theyoung men and girls prepared to take their leave.

  "And you and Mollie won't forget to find out for sure if you can go tothe lumber camp; will you, Betty?" asked Grace. "Let me know as soon asyou can."

  "I'll call you up first thing in the morning," promised Betty. "I'mpretty sure I can go. Oh! what fun we'll have!"

  "Any skating there?" asked Mr. Blackford.

  "Oceans of it!" said Grace, who had asked her father many questionsabout the camp they expected to visit.

  "How about ice boating?" inquired Will.

  "You can have that, too. There isn't an ice boat in camp, father said,but not far away a man has a sort of winter bungalow, and he keeps anumber. Maybe he'll lend us one."

  "And can you run it?" asked Amy, timidly.

  "It runs itself--you just sit in it and the wind blows it along. All youhave to do is steer," said Grace.

  "You're getting to be quite an authority," declared Mollie. "Oh, but Iknow we'll have a fine time!"

  "And we'll come up too, sometimes," put in Will. "That is, if you girlswill let us."

  "Of course," murmured Mollie. "Isn't that the telephone ringing, Grace?"for they were all on the front steps.

  "Yes. I'll see who it is," said Amy. "Maybe they want one of you girls.Wait!"

  "Can't have any of 'em--all taken," declared Will.

  "It's you they want, Mollie," reported Amy, coming back. "It's yourmother, and she seems to be in trouble."

  "Trouble?" Mollie's voice trembled.

  "Yes. Oh, dear! I'm sure she was crying!" and Amy's voice faltered, forshe was very tender-hearted.

  Mollie went to the telephone. The others listened anxiously for aninkling of what the message might be.

  "What!" cried Mollie. "Paul missing--he must have gone out right after Idid! Oh, dear! And it's beginning to snow!"

  "Girls!" she cried, turning to the others, and letting the receiver fallwith a bang, "little Paul is missing--mother thinks he went out ofdoors. Oh, that poor child!"