had instinctively moved back his chair. Even Heath was startled by Rex’s inordinate malignity.
What might have happened I don’t know, had not Von Blon at that moment stepped swiftly into the room and placed a restraining hand on the youth’s shoulder.
“Rex!” he said, in a calm, authoritative voice. “Get a grip on yourself. You’re disturbing Ada.”
The other ceased speaking abruptly; but his ferocity of manner did not wholly abate. He shook off the doctor’s hand angrily and swung round, facing Von Blon.
“What are you interfering for?” he cried. “You’re always meddling in this house, coming here when you’re not sent for, and nosing into our affairs. Mother’s paralysis is only an excuse. You’ve said yourself she’ll never get well, and yet you keep coming, bringing her medicine and sending bills.” He gave the doctor a crafty leer. “Oh, you don’t deceive me. I know why you come here! It’s Sibella!” Again he thrust out his head and grinned shrewdly. “She’d be a good catch for a doctor, too—wouldn’t she? Plenty of money——”
Suddenly he halted. His eyes did not leave Von Blon, but he shrank back and the twitching of his face began once more. A quivering finger went up; and as he spoke his voice rose excitedly.
“But Sibella’s money isn’t enough. You want ours along with hers. So you’re arranging for her to inherit all of it. That’s it—that’s it! You’re the one who’s been doing all this. . . . Oh, my God! You’ve got Chester’s gun—you took it! And you’ve got a key to the house—easy enough for you to have one made. That’s how you got in.”
Von Blon shook his head sadly and smiled with rueful tolerance. It was an embarrassing moment, but he carried it off well.
“Come, Rex,” he said quietly, like a person speaking to a refractory child. “You’ve said enough——”
“Have I!” cried the youth, his eyes gleaming unnaturally. “You knew Chester had the revolver. You went camping with him the summer he got it—he told me so the other day, after Julia was killed.” His beady little eyes seemed to stare from his head; a spasm shook his emaciated body; and his fingers again began worrying the hem of his jacket.
Von Blon stepped swiftly forward and, putting a hand on each of his shoulders, shook him.
“That’ll do, Rex!” The words were a sharp command. “If you carry on this way, we’ll have to lock you up in an institution.”
The threat was uttered in what I considered an unnecessarily brutal tone; but it had the desired effect. A haunting fear showed in Rex’s eyes. He seemed suddenly to go limp, and he docilely permitted Von Blon to lead him from the room.
“A sweet specimen, that Rex,” commented Vance. “Not a person one would choose for a boon companion. Aggravated macrocephalia—cortical irritation. But I say, Sergeant; really, y’ know, you shouldn’t have prodded the lad so.”
Heath grunted.
“You can’t tell me that guy don’t know something. And you can bet your sweet life I’m going to search his room damn good for that gun.”
“It appears to me,” rejoined Vance, “he’s too flighty to have planned the massacre in this house. He might blow up under pressure and hit somebody with a handy missile; but I doubt if he’d lay any deep schemes and bide his time.”
“He’s good and scared about something,” persisted Heath morosely.
“Hasn’t he cause to be? Maybe he thinks the elusive gunman hereabouts will chose him as the next target.”
“If there is another gunman, he showed damn bad taste not picking Rex out first.” It was evident the Sergeant was still smarting under the epithets that had so recently been directed at him.
Von Blon returned to the drawing-room at this moment, looking troubled.
“I’ve got Rex quieted,” he said. “Gave him five grains of luminal. He’ll sleep for a few hours and wake up penitent. I’ve rarely seen him quite as violent as he was to-day. He’s supersensitive—cerebral neurasthenia; and he’s apt to fly off the handle. But he’s never dangerous.” He scanned our faces swiftly. “One of you gentlemen must have said something pretty severe.”
Heath looked sheepish. “I asked him where he’d hid the gun.”
“Ah!” The doctor gave the Sergeant a look of questioning reproach. “Too bad! We have to be careful with Rex. He’s all right so long as he isn’t opposed too strongly. But I don’t just see, sir, what your object could have been in questioning him about the revolver. You surely don’t suspect him of having had a hand in these terrible shootings.”
“You tell me who did the shootings, doc,” retorted Heath pugnaciously, “and then I’ll tell you who I don’t suspect.”
“I regret that I am unable to enlighten you.” Von Blon’s tone exuded its habitual pleasantness. “But I can assure you Rex had no part in them. They’re quite out of keeping with his pathologic state.”
“That’s the defense of half the high-class killers we get the goods on,” countered Heath.
“I see I can’t argue with you.” Von Blon sighed regretfully, and turned an engaging countenance in Markham’s direction. “Rex’s absurd accusations puzzled me deeply, but, since this officer admits he practically accused the boy of having the revolver, the situation becomes perfectly clear. A common form of instinctive self-protection, this attempting to shift blame on others. You can see, of course, that Rex was merely trying to turn suspicion upon me so as to free himself. It’s unfortunate, for he and I were always good friends. Poor Rex!”
“By the by, doctor,” came Vance’s indolent voice; “that point about your being with Mr. Chester Greene on the camping-trip when he first secured the gun: was that correct? Or was it merely a fancy engendered by Rex’s self-protective instinct?”
Von Blon smiled with faultless urbanity and, putting his head a little on one side, appeared to recall the past.
“It may be correct,” he admitted. “I was once with Chester on a camping-trip. Yes, it’s quite likely—though I shouldn’t like to state it definitely. It was so long ago.”
“Fifteen years, I think, Mr. Greene said. Ah, yes—a long time ago. Eheu! fugaces, Postume, Postume, labuntur anni. It’s very depressin’. And do you recall, doctor, if Mr. Greene had a revolver along on that particular outing?”
“Since you mention it, I believe I do recall his having one, though again I should choose not to be definite on the subject.”
“Perhaps you may recollect if he used it for target practice.” Vance’s tone was dulcet and uneager. “Popping away at tree-boles and tin cans and what not, don’t y’ know.”
Von Blon nodded reminiscently.
“Ye-es. It’s quite possible. . . .”
“And you yourself may have done a bit of desult’ry popping, what?”
“To be sure, I may have.” Von Blon spoke musingly, like one recalling childish pranks. “Yes, it’s wholly possible.”
Vance lapsed into a disinterested silence, and the doctor, after a moment’s hesitation, rose.
“I must be going, I’m afraid.” And with a gracious bow he started toward the door. “Oh, by the way,” he said, pausing, “I almost forgot that Mrs. Greene told me she desired to see you gentlemen before you went. Forgive me if I suggest that it might be wise to humor her. She’s something of a dowager, you know, and her invalidism has made her rather irritable and exacting.”
“I’m glad you mentioned Mrs. Greene, doctor.” It was Vance who spoke. “I’ve been intending to ask you about her. What is the nature of her paralysis?”
Von Blon appeared surprised.
“Why,