"Might 'a' been used, all the same," and Fibsy stared at it. "Howsumever, that don't count. We've got her dead, and we've got to find out who did it—and, so far, it wasn't Mr. Bannard."

"When will it begin to be Mr. Bannard?" said Hughes, with fine sarcasm.

"I mean," Fibsy returned, quietly, "so far, they ain't nothin' to implicate Mr. Bannard. Somethin' might turn up, though. But I don't think so. And anyway, the problem, first of all, ain't who, but how. That's what we must hunt out first, eh, Mr. Stone?"

"Very well, Terence," Stone spoke abstractedly, "you attend to that, while I find the pin. It seems to me that is the most important thing——"

"Ain't that F. S. all over!" cried Fibsy, admiringly. "Puts his finger on the very spot! An' me a babblin' foolishness about findin' how the chappie got in!"

"You do certainly babble foolishness," flung out Hughes, unable to conceal his annoyance at the boy's forwardness, as he looked upon it.

"Yes, sir," and Fibsy's humble acceptance of Hughes' reproof had no tinge of irony. The boy was not conceited or bumptious, he was Stone's assistant, and took no orders save from his chief, but he never assumed importance on his own merit, nor behaved with insolence or impertinence to anyone. His only desire was to serve Fleming Stone, and an approving nod from the great detective was all the reward Terence Maguire desired.

And then, Fibsy seemed possessed of a new idea of some sort, for with a sudden exclamation and a word of excuse he ran from the room.

"Don't allow yourself to be annoyed by that boy, Mr. Hughes," said Stone; "he is a great help to me in any work. His manners are not intentionally rude, but sometimes he gets absorbed in an investigation, and he forgets what I've tried to teach him of courtesy and consideration for others. He's of humble birth, but I'm endeavoring to make him of gentlemanly behaviour. And I'm succeeding, on the whole, but in emergency the fervor of his soul runs away with the intent of his mind. For he wants to behave as I ask him to, I know that. Therefore, I forgive him much, and I must ask you to be also lenient."

Then, apparently feeling that he had done his duty by Hughes, the detective turned his attention to the room once more.