
revolving chair, now turned toward the safe.
Apparently, while opening the safe in the presence of some visitor he trusted, Kelthorn had been stabbed
treacherously in the back. Either that, or the murderer had entered stealthily, staged a silent sneak to the
spot where Kelthorn stooped, and had driven home the killing blow. Weston inclined to the theory that
the killer was already present. Unless Kelthorn had been with a man he considered a friend, he would
have been more cautious and would probably have locked the office door before opening the safe.
The paper knife had been twisted from Kelthorn's body after the fatal blow and was now lying on the
floor beside the body. Weston had not touched it, because he wanted the knife to be tested for
fingerprints, but he was examining it closely, as he stooped on the floor. The paper knife had a flat metal
handle, stamped with letters. Its long metal blade had nothing of a cutting edge, but it came to a fine,
sharp point, like an ice-pick.
"More deadly than it would appear at first sight," was Weston's statement in regard to the knife. "If
Kelthorn's friend noticed it lying on the desk, it could have tempted him to murder, providing, of course,
that he had considered such an act." Looking up at Cardona, Weston added, "Bring the light closer,
inspector. I want to read what's stamped on the handle."
While Cardona complied, Lamont Cranston studied Jenkins. The watchman had a sharp, pointed face,
the kind that indicated an individual who should be nervous and quick of manner. Instead, Jenkins had
assumed a stolid pose; his eyes were fixed dully on the scene before him, as though he were witnessing
the enactment of a dream. There was nothing of horror and scarcely anything of interest in the
watchman's gaze. All this might merely be routine, quite customary in his rounds, judging by the fellow's
expression.
"Compliments of the Arcturus Agency," read Weston, from the knife handle. "General Insurance.
Brumder Building, New York, NY. Phone, Chelsea eight—four —three—six—six. Call them,
inspector."
Cardona picked up Kelthorn's desk phone by its tips, to avoid smudging any likely fingerprints. He
dialed, then lifted the phone to his ear, with the same trick hold. Receiving an answer from the insurance
agency, Cardona announced himself officially and asked if they did business with Kelthorn. Learning that
they did, Cardona also found that Kelthorn was a steady enough customer to have been given a
complimentary knife.
"Tell them to send a man over," ordered Weston, as he caught the gist of Cardona's conversation. "We
want them to identify the paper knife."
"And you might have them bring another sample," suggested Cranston. "It would be good for a
comparison."
Cranston's remark was addressed to Weston, but Cardona waited for the commissioner to repeat it,
which he did. Cranston gave a slight smile of approval. It was smart of Cardona to let the order come
direct from Weston, rather than ruffle the commissioner by acting without his authority.
That was always the way when Commissioner Weston was personally investigating a case. Patience was
more than a virtue; it was a necessity. During the next quarter hour, Cranston, Cardona and others
watched Weston sift stacks of papers, bills, receipts, invoices and other documents from Kelthorn's safe,
all of which seemed to become more and more irrelevant to the case. Over near the door, Cranston
heard Clyde Burke confide to another reporter.
"If they ever find the murderer," Clyde said, "he will have saved himself half a life's sentence by the time