"Of what? Of leaving his respectable villa at the dead of night, tramping several miles at his age in the dark, and deliberately murdering his own best client and old friend under circ.u.mstances so risky to himself that only a combination of lucky chances saw him safely through the adventure? Nothing--absolutely nothing but homicidal mania could possibly account for such a performance, and the man was obviously as sane as you or I. I felt certain that there was something wrong somewhere, but as for suspecting him of being the princ.i.p.al in the crime, the idea was stark lunacy!"

"By George, it was a tough proposition!" said Ned. "By the way, had you heard of George Rattar at that time?"

"Oh, yes, I heard of him, and knew they resembled one another, but as I was told that he had left the place for years and was now dead, my thoughts never even once ran in that direction until I got into a state of desperation, and then I merely surmised that his misdeeds might have been at the bottom of some difficulty between Simon and Sir Reginald."

"Then how on earth did you ever get on to the right track?"

"I never would have if the man hadn't given himself away. To begin with, he was fool enough to fall in with my perfectly genuine a.s.sumption that he was either employing me or acting for my employer. No doubt he stood to score if the bluff had come off, and he banked on your stipulation that your name shouldn't appear. But if he had only been honest in that matter, my suspicions would never have started--not at that point anyhow."

"That was Providence--sure!" said Ned with conviction.

"I'm inclined to think it was," agreed Carrington. "Then again his advice to Sir Malcolm and Miss Farmond was well enough designed to further his own scheme of throwing suspicion on them, but it simply ended in his being bowled out both times, and throwing suspicion on himself. But _the_ precaution which actually gave him away was putting in that advertis.e.m.e.nt about his ring."

"I was just wondering," said Ned, "how that did the trick."

"By the merest fluke. I noticed it when I was making enquiries at the Police Office on quite different lines, but you can imagine that I switched off my other enquiries pretty quick when Superintendent Sutherland calmly advanced the theory that the ring was stolen when Rattar's house was entered by some one unknown on the very night of the murder!"

"This is the first I've heard of that!" cried Ned.

"It was the first I had, but it led me straight to Rattar's house and a long heart to heart talk with his housemaid. That was when I collected that extraordinary mixed bag of information which I was wondering yesterday whether to believe or not. Here are the items, and you can judge for yourself what my state of mind was when I was carrying about the following precious pieces of information."

He ticked the items off on his fingers.

"A mysterious man who entered the garden one night and left his footprints in the gravel, and whose visit had a strange and mysterious effect on Rattar. Funny feelings produced in the bosom of the housemaid by the presence of her master. Doors of unused rooms mysteriously locked and keys taken away; said to be old papers inside. Mysterious visit of mysterious man at dead of night to remove the said papers. A ring that couldn't come off the owner's finger mysteriously lost. Mysterious burglary on night of the murder by mysterious burglar who left all windows and doors locked behind him and took nothing away. Mysterious perambulations of his garden every night at nine o'clock by Mr. Simon Rattar."

"Great Scot!" murmured Cromarty.

"I have given you the items in what turned out to be their order of date, but I got them higgledy-piggledy and served up in a sauce of mystery and trembly sensations that left me utterly flummoxed as to how much--if anything--was sober fact. However, I began by fastening on to two things. The first was the burglary, which of course at once suggested the possibility that the man who had committed the crime at Keldale had returned to Rattar's house and got in by that window. The second was the nightly perambulations, which could easily be tested.

When Mr. Rattar emerged at nine that night, I was in the garden before him. And what do you think he did?"

"Had a look at his brother's grave?"

"Smoked two pipes of tobacco! A man who was an anti-tobacco fanatic! The truth hit me straight in the eye--'That man is not Simon Rattar!' And then of course everything dropped into its place. The ex-convict twin brother, the only evidence of whose supposit.i.tious death was an announcement in the paper, obviously put in as a blind. The personal resemblance between the two. All the yarns told me by the housemaid, including the strange visitor--George of course arriving; the man who came for the papers--George himself taking out the body; and the vanished ring. Everything fitted in now, and the correspondence between Sir Reginald and Rattar which had beaten me before, gave the clue at once as to motive."

"I guess you felt you had deserved a drink that trip!" said Ned.

"I didn't stop to have my drink. I went straight off to see old Ison and pumped him for the rest of the evening. He wasn't very helpful but everything I could get out of him went to confirm my theory. I found for certain that Simon Rattar had never smoked in his life, and that George used to be a heavy smoker. I also learned that a few recent peculiarities of conduct had struck the not too observant Ison, one being very suggestive. Rattar, it seemed, kept an old pair of kid gloves in his desk which he was in the habit of wearing when he was alone in the office."

"Don't quite see the bearing of that."

"Well, on my hypothesis it was to avoid leaving finger marks. You see George was an ex-convict. It was a very judicious precaution too, and made it extremely difficult to catch him out by that means, for one could scarcely approach a respectable solicitor and ask him for an impression of his fingers! And anyhow, nothing could be definitely proved against him until we had found Simon's body. That was the next problem. Where had he hidden it?"

"And how did you get at that?"

"Guessed it. At first my thoughts went too far afield, but when I went over the times mentioned in the maid's story of the man who took away the papers, and the fact that she heard no sound of a wheeled vehicle, I realised that he must have simply planted it in one of the flower beds.

This morning I prodded them all with a stout walking stick and found the spot. Then I talked like a father to old Sutherland and fixed everything up with him. And then I sent my wire to you."

"And you deliberately tell me you got there as much by good luck as good guidance?"

Carrington's eyes thoughtfully followed his smoke rings.

"I can see the luck at every turn," he answered, "and though I'd like to believe in the guidance, I'm hanged if it's quite as distinct!"

"If you are telling me the neat, unvarnished truth, Carrington," said his admiring employer, "I can only say that you've a lot to learn about your own abilities--and I hope to Heaven you'll never learn it!"

"But I a.s.sure you there are some people who think me conceited!"

"There are guys of all sorts in the world," said Ned. "For instance there's a girl who has mistaken me for a daisy, and I've got to get back to her now. Good night! I won't say 'Thanks' because I can't shout it loud enough."

When his gig lamps had flashed up the silent street and Carrington had turned back from the pavement into the hotel, he met his friend Miss Peterkin.

"Mr. Cromarty's late to-night," said she. "A fine gentleman that! I always say there are few like Mr. Cromarty of Stanesland."

"That's lucky for me," said Carrington with a smile that puzzled her a little. "My business in life would be gone if there were!"

THE END