"Or else," Merrick suggested, "it was the performance of an expert criminal; no bungling, no work of a green hand."
Mr. Whitney started slightly, but the detective continued. "Another point: Hobson, as you say, was the one man whom Hugh Mainwaring feared and who evidently had some hold upon him; would he then have dared denounce him as a liar and an impostor? Would not his use of such terms imply that he was addressing one whom he considered a stranger and unacquainted with the facts in the case?"
"I see," the attorney replied quickly; "you have in mind Hobson's accomplice, the tall man with dark glasses."
Merrick smiled. "You are then inclined to the opinion that J. Henry Carruthers, who called in the afternoon, is identical with the so-called Jack Carroll who accompanied Hobson in the evening?"
"Certainly that is a reasonable supposition. The descriptions of the two men agree remarkably, and the darkey was positive, both in his testimony at the inquest and in conversation with me, that they were one and the same person."
"Their general appearance seems to have been much the same, but their conduct and actions were totally unlike. Carruthers acted fearlessly, with no attempt at concealment; while, if you will stop to think of it, of all the witnesses who tried to give a description of Carroll, not one had seen his face. He always remained in the background, as much concealed as possible."
"I don't deny that you are correct," the attorney said musingly; "and they may have been two distinct individuals, Carroll evidently being the guilty party; but even in that event, in my opinion, he was only carrying out with a skillful hand the plans already arranged by that woman and Hobson."
"Whatever part Carroll took in the affair, he was undoubtedly Hobson's agent; and you will find that Hobson and Mrs. LaGrange have been more intimately associated and for a much longer time than you suspect," and Merrick repeated what he had overheard of the interview in Mrs. LaGrange's parlor, just after the close of the inquest.
Mr. Whitney listened with deep interest. "Well, well! And you heard her accuse him of being an accessory? Of course she referred to the murder. By George! I should have wanted them arrested on the spot!"
After a slight pause, he continued. "There's one thing, Merrick, in the conduct of Carruthers which I don't understand. Why, after telling the secretary that he would remain at the Arlington for the next two or three days, should he return to the city the next morning on the 3.10 train?"