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<h2> XXII. O. B. AGAIN </h2>
<p>"What's happened? Something very important. I ought to hope so after this
confounded failure."</p>
<p>"Failure? Didn't he read the letters?"</p>
<p>"Yes, he read them. Had to, but—"</p>
<p>"Didn't weaken? Eh?"</p>
<p>"No, he didn't weaken. You can't get water out of a millstone. You may
squeeze and squeeze; but it's your fingers which suffer, not it. He thinks
we manufactured those letters ourselves on purpose to draw him."</p>
<p>"Humph! I knew we had a reputation for finesse, but I didn't know that it
ran that high."</p>
<p>"He denies everything. Said she would never have written such letters to
him; even goes so far to declare that if she did write them—(he must
be strangely ignorant of her handwriting) they were meant for some other
man than himself. All rot, but—" A hitch of the shoulder conveyed
Sweetwater's disgust. His uniform good nature was strangely disturbed.</p>
<p>But Mr. Gryce's was not. The faint smile with which he smoothed with an
easy, circling movement, the already polished top of his ever present cane
conveyed a secret complacency which called up a flash of discomfiture to
his greatly irritated companion.</p>
<p>"He says that, does he? You found him on the whole tolerably
straightforward, eh? A hard nut; but hard nuts are usually sound ones.
Come, now! prejudice aside, what's your honest opinion of the man you've
had under your eye and ear for three solid weeks? Hasn't there been the
best of reasons for your failure? Speak up, my boy. Squarely, now."</p>
<p>"I can't. I hate the fellow. I hate any one who makes me look ridiculous.
He—well, well, if you'll have it, sir, I will say this much. If it
weren't for that blasted coincidence of the two deaths equally mysterious,
equally under his eye, I'd stake my life on his honesty. But that
coincidence stumps me and—and a sort of feeling I have here."</p>
<p>It is to be hoped that the slap he gave his breast, at this point, carried
off some of his superfluous emotion. "You can't account for a feeling, Mr.
Gryce. The man has no heart. He's as hard as rocks."</p>
<p>"A not uncommon lack where the head plays so big a part. We can't hang him
on any such argument as that. You've found no evidence against him?"</p>
<p>"N—no." The hesitating admission was only a proof of Sweetwater's
obstinacy.</p>
<p>"Then listen to this. The test with the letters failed, because what he
said about them was true. They were not meant for him. Miss Challoner had
another lover."</p>
<p>"Only another? I thought there were a half-dozen, at least."</p>
<p>"Another whom she favoured. The letters found in her possession—not
the ones she wrote herself, but those which were written to her over the
signature O. B. were not all from the same hand. Experts have been busy
with them for a week, and their reports are unanimous. The O. B. who wrote
the threatening lines acknowledged to by Orlando Brotherson, was not the
O. B. who penned all of those love letters. The similarity in the writing
misled us at first, but once the doubt was raised by Mr. Challoner's
discovery of an allusion in one of them which pointed to another writer
than Mr. Brotherson, and experts had no difficulty in reaching the
decision I have mentioned."</p>
<p>"Two O. B.s! Isn't that incredible, Mr. Gryce?"</p>
<p>"Yes, it is incredible; but the incredible is not the impossible. The man
you've been shadowing denies that these expressive effusions of Miss
Challoner were meant for him. Let us see, then, if we can find the man
they were meant for."</p>
<p>"The second O. B.?"</p>
<p>"Yes."</p>
<p>Sweetwater's face instantly lit up.</p>
<p>"Do you mean that I—after my egregious failure—am not to be
kept on the dunce's seat? That you will give me this new job?"</p>
<p>"Yes. We don't know of a better man. It isn't your fault, you said it
yourself, that water couldn't be squeezed out of a millstone."</p>
<p>"The Superintendent—how does he feel about it?"</p>
<p>"He was the first one to mention you."</p>
<p>"And the Inspector?"</p>
<p>"Is glad to see us on a new tack."</p>
<p>A pause, during which the eager light in the young detective's eye clouded
over. Presently he remarked:</p>
<p>"How will the finding of another O. B. alter Mr. Brotherson's position? He
still will be the one person on the spot, known to have cherished a
grievance against the victim of this mysterious killing. To my mind, this
discovery of a more favoured rival, brings in an element of motive which
may rob our self-reliant friend of some of his complacency. We may
further, rather than destroy, our case against Brotherson by locating a
second O.B."</p>
<p>Mr. Gryce's eyes twinkled.</p>
<p>"That won't make your task any more irksome," he smiled. "The loop we thus
throw out is as likely to catch Brotherson as his rival. It all depends
upon the sort of man we find in this second O. B.; and whether, in some
way unknown to us, he gave her cause for the sudden and overwhelming rush
of despair which alone supports this general theory of suicide."</p>
<p>"The prospect grows pleasing. Where am I to look for my man?"</p>
<p>"Your ticket is bought to Derby, Pennsylvania. If he is not employed in
the great factories there, we do not know where to find him. We have no
other clew."</p>
<p>"I see. It's a short journey I have before me."</p>
<p>"It'll bring the colour to your cheeks."</p>
<p>"Oh, I'm not kicking."</p>
<p>"You will start to-morrow."</p>
<p>"Wish it were to-day."</p>
<p>"And you will first inquire, not for O. B., that's too indefinite; but for
a young girl by the name of Doris Scott. She holds the clew; or rather she
is the clew to this second O. B."</p>
<p>"Another woman!"</p>
<p>"No, a child;—well, I won't say child exactly; she must be sixteen."</p>
<p>"Doris Scott."</p>
<p>"She lives in Derby. Derby is a small place. You will have no trouble in
finding this child. It was to her Miss Challoner's last letter was
addressed. The one—"</p>
<p>"I begin to see."</p>
<p>"No, you don't, Sweetwater. The affair is as blind as your hat; nobody
sees. We're just feeling along a thread. O. B.'s letters—the real O.
B., I mean, are the manliest effusions possible. He's no more of a milksop
than this Brotherson; and unlike your indomitable friend he seems to have
some heart. I only wish he'd given us some facts; they would have been
serviceable. But the letters reveal nothing except that he knew Doris. He
writes in one of them: 'Doris is learning to embroider. It's like a fairy
weaving a cobweb!' Doris isn't a very common name. She must be the same
little girl to whom Miss Challoner wrote from time to time."</p>
<p>"Was this letter signed O. B.?"</p>
<p>"Yes; they all are. The only difference between his letters and
Brotherson's is this: Brotherson's retain the date and address; the second
O. B.'s do not."</p>
<p>"How not? Torn off, do you mean?"</p>
<p>"Yes, or rather, neatly cut away; and as none of the envelopes were kept,
the only means by which we can locate the writer is through this girl
Doris."</p>
<p>"If I remember rightly Miss Challoner's letter to this child was free from
all mystery."</p>
<p>"Quite so. It is as open as the day. That is why it has been mentioned as
showing the freedom of Miss Challoner's mind five minutes before that
fatal thrust."</p>
<p>Sweetwater took up the sheet Mr. Gryce pushed towards him and re-read
these lines:</p>
<p>"Dear Little Doris:<br/>
<br/>
"It is a snowy night, but it is all bright inside and I feel no<br/>
chill in mind or body. I hope it is so in the little cottage in<br/>
Derby; that my little friend is as happy with harsh winds blowing<br/>
from the mountains as she was on the summer day she came to see<br/>
me at this hotel. I like to think of her as cheerful and beaming,<br/>
rejoicing in tasks which make her so womanly and sweet. She is<br/>
often, often in my mind.<br/>
<br/>
"Affectionately your friend,<br/>
"EDITH A. CHALLONER."<br/></p>
<p>"That to a child of sixteen!"</p>
<p>"Just so."</p>
<p>"D-o-r-i-s spells something besides Doris."</p>
<p>"Yet there is a Doris. Remember that O. B. says in one of his letters,
'Doris is learning to embroider.'"</p>
<p>"Yes, I remember that."</p>
<p>"So you must first find Doris."</p>
<p>"Very good, sir."</p>
<p>"And as Miss Challoner's letter was directed to Derby, Pennsylvania, you
will go to Derby."</p>
<p>"Yes, sir."</p>
<p>"Anything more?"</p>
<p>"I've been reading this letter again."</p>
<p>"It's worth it."</p>
<p>"The last sentence expresses a hope."</p>
<p>"That has been noted."</p>
<p>Sweetwater's eyes slowly rose till they rested on Mr. Gryce's face: "I'll
cling to the thread you've given me. I'll work myself through the
labyrinth before us till I reach HIM."</p>
<p>Mr. Gryce smiled; but there was more age, wisdom and sympathy for youthful
enthusiasm in that smile than there was confidence or hope.</p>
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