I smiled as I dismissed the thoughtit seemed too grotesque. No; once and for all I decided that the whole affair could have nothing to do with any kind of personal animosity. Criminals were at work, desperate criminals, perhaps, and Osborne and Dulcie and I had chanced to prove very useful as pawns in some scheme of theirs for securing plunder. I glanced at my watch. It was just five o'clock. Concluding that Jack Osborne must now be at his rooms, I drove to the Russell Hotel. Yes, he particularly wanted to see me; would I please go up at once, the clerk said when he had telephoned up my name and my inquiry if Mr. Osborne were at home to anybody.

Easterton was with him still; a doctor was on the point of leaving as I entered the room where Jack sat in his dressing-gown in a big chair, drinking a cup of soup. Already he looked better, I thought, than when I had seen him at the house in Grafton Street, barely two hours before.

After exchanging a few remarks with him, and being assured by Easterton that the doctor had said that Jack might now see anyone he pleased, I came straight to the question of the telegram, repeating to him almost word for word what I had told Aunt Hannah.

For nearly a minute after I had stopped speaking he did not utter. He appeared to be thinking deeply, judging by the way his brows were knit. Then, suddenly looking straight at me, he said:

"Mike, I don't like this businessI don't like it at all. There's something radically wrong about the whole thing. Now, look here, you know that when I say a thing I mean it. Therefore I tell you thisI am going to set to work, as soon as I have quite recovered from the nightmare I have been through, to discover what is happening. I am going to solve every detail of this mystery, and if there is some gang of scoundrels at work committing burglaries and what notbecause I feel quite sure this affair is in some way connected with the robbery at HoltI am going to get them convicted. The doctor tells me I shall be perfectly all right in a couple of days. I have nothing to do. You have nothing to do. Will you join me in this attempt I am going to make to track these men down? I hear it said that you are engaged to be married to Dulcie Challoner. If that's so, then you should be even more anxious than I am to get this gang arrestedthe police say it must be a gang. They have looted some thousands of pounds' worth of jewellery which practically belonged to Dulcie Challoner. Think what it will mean to her if through your efforts all that is restored to her. Besides, she will think you a heroI mean an even greater hero than she already considers you, most likely; I confess I don't agree with her, old man. You are a very good chapbut a hero? No. Say, then, will you help me in this search? It may prove exciting too; on the other hand, it may not."

Jack's breezy manner and almost boyish enthusiasm appealed to me. After all, I had, as he said, nothing on earth to doI often wished I hadand I was rather keen on anything that might lead to or savour of adventure. Though I was engaged to Dulcie, there were family reasons why the marriage could not take place at once, and then I thought again of what Jack had just said about the stolen jewelsDulcie was still greatly upset at their loss, and there was even the possibility, I thought with a smile, that if I were directly or indirectly responsible for their recovery Aunt Hannah might eventually deign again to smile upon mewhich would, of course, give me great joy!

"Yes, old chap," I said, "I'll do anything you jolly well like. I'm sick of doing nothing."

"First rate!" he answered. "Then that's settled. I've all sorts of ideas and theories about the Holt Manor robbery and this affair of mine, and that telegram to-day, and other things that have happenedsome you know about, some you don't. I have a friend who was for twenty years at Scotland YardGeorge Preston, wonderful chap, knows London upside-down and inside-out, and now he's kicking his heels with nothing to do he'll be only too glad to earn a bit. You might ring him up for me now, and ask him to come here to-morrow."

Somebody knocked, and I went to the door, Jack having told me that he did not want to see anybody likely to bore him.

It was only an hotel messenger. The clerk in the office had tried to ring up the room, he said, but could get no answer. Turning, I saw that Jack had forgotten to replace the receiver the last time he had spoken.