"Merely to put this malachite and gold trinket into certain hands," he added. "If this link can be traced out to its owner, it may lead to some discoveries."

Mr. Conroy accordingly went to London. This, it will be noted, was within two or three days of his first arrival at Heron Dyke. He returned from London the following day, having put matters, together with the sleeve-stud, as he informed Miss Winter, into efficient hands. Taking up his abode, as before, at Nullington, he passed a considerable portion of his time at Heron Dyke.

Months before this, Conroy had heard tell of the strange disappearance of Katherine Keen; but only now was he made aware that the Hall was supposed to be haunted by her presence. He listened to the story of how the two maids, whom Aaron Stone had afterwards discharged in consequence, had positively asserted that they saw her looking down upon them from the gallery; he heard the story of Mrs. Carlyon's fright, and of Maria Kettle's strange experience not long ago. The evidence, taken collectively, was too strong to be altogether ignored, despite his inclination so to treat it.

"I wish the ghost would favour me with a visit!" he heartily exclaimed. "I would do my best to put its unsubstantiality to the proof."

"I know not which would be the worse: to find that Katherine is in the Hall in the flesh--that she is not dead, as her poor sister believes--or that the house is haunted by her spirit," breathed Miss Winter in answer.

"Have you any objection to my exploring this north wing?" he inquired, after a pause of thought.

"Not the least. I should be thankful for you to do so."

Mr. Conroy lost no time. That same afternoon he ascended to the north wing; and did not come down until he had visited every nook and corner of it. Room after room, passage after passage, closet after closet, he examined, and satisfied himself that no person or thing was hidden in them. Taking the precaution to lock the doors, he brought the keys away with him.

"Troubled spirits never walk by daylight, I believe," remarked Mrs. Toynbee to him. She had never relished the superstitious tales. "We must look for them by dark, Mr. Conroy, if at all."

"That is just what I mean to do," replied Conroy.