"That," smiled the secret agent, "is rather well thought out. But you have overlooked one thing. That Dr. Morse intended doing as you state would necessitate his knowing definitely what his mysterious communicants desired. His own acts and especially his own words, as overheard by his niece, indicate the reverse of this. And if he did not know what they wanted," with a twinkle in his eye, "it is certain that he could not pack it away in a bag."

Fuller looked perplexed, but nodded understandingly.

"That's so," said he. "I forgot, for a moment, that the case had that peculiar phase." Again he looked all about. "However," he continued, "the bag is not here, and if the murderer took it with him, you can bet that he had an excellent reason for so doing."

While Fuller was speaking, Ashton-Kirk lifted the coat from the floor; several of the pockets were pulled out. At once he examined the coat worn by the dead man; the inside pockets of this were also turned out, as were those upon the lower outside.

"There was a search," said he. "But, as before, when the house at Sharsdale was broken into, the personal valuables were not its object. Here is his watch in his fob pocket, and this," taking up a torn card case from the desk, "lies just where the criminal flung it in his anger at not finding what he wanted. Its contents," pointing to a tightly wadded heap of bills also upon the desk, "are there."

"Suppose," doubted Fuller, "that the paper wanted was in this pocket case. The murderer would have taken it. As it stands, you do not know whether he found it or not."

"I think I do," replied Ashton-Kirk. "A man who has sought for a thing for a long time is delighted at finding it. The man who threw those bills upon the desk," holding up the tightly twisted lump, "was angry. That is plain in the vehemence of the act."

He stooped and pulled open drawer after drawer in the desk; their contents were tumbled, showing that a rough and hasty hand had been plunged into them. Fuller was gazing in fascinated silence at the long, supple, inquiring fingers as they deftly ran through everything; then suddenly he noted them halt. At once his glance went to the owner's face; Ashton-Kirk, his eyes turned in a sidelong look toward a door at the rear of the room, stood in an attitude of listening. Fuller was about to speak, but the other lifted his hand in a warning gesture. There was an instant's silence, the secret agent listening as before; then he bent toward Fuller and said softly:

"Switch off the lights!"