"I must have annoyed 'em most d.a.m.nably."

"You had. I congratulate you, but Heaven only knows where I may convoy you some day on an extradition warrant....Proceed, Mr. Grant."

"I a.s.sure you, on my honor, that the only reasonable suggestion I can make is that put forward by my gardener to-day," said Grant. "He thinks that the murder must have been committed by a lunatic. I can offer no other hypothesis."

"Your gardener may be right. But what lunatic, barring yourself and the horse-coper, Elkin, is in love with Doris Martin?"

Like Elkin the previous night, Grant struck the table till things rattled.

"Keep her name out of it," he cried fiercely. "You are a man of the world, not a suspicious idiot of the Robinson type. You heard to-day the full and true explanation of her presence here on Monday night. It was a sheer accident. Why harp on Doris Martin rather than any member of the Bates family?"

"Who, may I ask, is Doris Martin?" put in Hart.

"The Steynholme postmaster's daughter," said Furneaux. "A remarkably pretty and intelligent girl. If her father was a peer she would be the belle of a London season. As it is, her good looks seem to have put a maggot in more than one nut in this village."

Hart waved the negro's head in the air.

"The lunatic theory for mine," he declared. "If one woman's lovely face could bring a thousand ships to Ilion, why should not another's drive men to madness in Steynholme?"

"Well phrased, sir," cackled Furneaux delightedly. "I'll w.a.n.gle that in on a respected colleague of mine, who is a whale at deducing a proposition from given premises, but cannot induce a general fact from particular instances to save his life ... Now, stifle your romantic frenzy, Mr. Grant, and listen to me. If you were minded to instruct me in the art of writing good English, I would sit at your feet an attentive disciple. When I, Furneaux, of the 'Yard,' lay down a first principle in the investigation of crime, I expect deference on your part. I tell you unhesitatingly that if Doris Martin didn't exist, Adelaide Melhuish would be alive now. That, as a thesis, is nearly as certain a thing as that the sun will rise to-morrow. I go farther, and hazard the guess, not the fixed belief, though my guesses are usually borne out by events, that if Doris Martin had not been in this garden at half past ten on Monday night, Adelaide Melhuish would not have been killed some twenty minutes later. It is useless for you to fume and rage in vain effort to disprove either of these presumptive facts. You are simply beating the air. This mystery centers in and around the postmaster's daughter. Come, now, you are a reasonable person. Admit the cold, hard truth, and then give play to your fancy."

"Sir," said Hart, brandishing his pipe again, "I suggest that you and I, here and now, form a mutual admiration society."

"It is a cruel and bitter thing that an innocent girl should be dragged into a.s.sociation with a foul crime," said Grant stubbornly. "I am not disputing the force of your ac.u.men, Mr. Furneaux. My only desire is to shield the good name of a very charming young lady."

"What's done can't be undone," countered the detective, well knowing that Grant confessed himself beaten.

"But what is all the bother about? You heard from Miss Martin's own lips absolutely the whole truth, and nothing but the truth. Put her in the witness-box, and what more can she tell you?"

"I am not worrying about her appearance in the witness-box," said Furneaux dryly. "Long before that stage is reached I shall be hunting a star burglar, or, perhaps, looking into the Foreign Office _dossier_ of our worthy friend here, as to-day's papers hint at trouble in Venezuela.

No, sir. The county police will get all the credit. P.C. Robinson will be sw.a.n.king about then, telling the yokels what _he_ did. I, with Olympic nod, say, 'There's your man!' and the handcuffs' brigade do the rest. So far as I can foresee, Miss Martin's name may be spared any undue prominence in this inquiry. I go even farther, and promise that anything I can do in that way shall be done."

"That is very kind and considerate of you," said Grant gratefully.

"Don't halloo till you're out of the wood." said Furneaux, sitting back suddenly and nursing his left knee with clasped hands. "I can't control other people's actions, you know. What I insist on to-night is that you shall envisage this affair in its proper light. We have a long way to travel before counsel rises with his smug 'May it please you, me lud, and gentlemen of the jury.' But, having persuaded you to agree that, w.i.l.l.y nilly, Miss Doris is the hub of our little universe for the hour, I now swear you and this fire-eater in as a.s.sistants. There must be no more speeches, no punching of heads, very little love-making, and that by order--"

"Has the postmaster's daughter a delectable sister, O Liliputian cop?"

demanded Hart.

"No. Two of 'em would have caused a riot long since. Mr. Grant will do all, and more than all, necessary in that direction."

Grant leaned forward. He spoke very earnestly.

"I want you to believe me when I tell you," he said, "that I never gave serious thought to the notion of marrying Miss Martin until such a possibility was suggested last night by that swab, Ingerman."

"Ah, Ingerman! You kept a record of what he said, I gather?"

"Yes, here it is."

Grant rose, and went to a writing-desk with nests of drawers which stood against the wall on the left of the door. He never used it for its primary purpose. When the table was laid for meals, Minnie or her mother had orders to remove all papers and books to the top of the desk. The house contained no other living-room of size. The hall was s.p.a.cious; a smoking den next the dining-room had degenerated into a receptacle of guns, fishing-rods, golf-clubs, Alpenstocks, skis and other such sporting accessories. The remainder of the ground-floor accommodation was given up to the Bateses.

Unlocking a drawer, Grant produced a notebook, which he handed to Furneaux. The detective laid it on the table. He was sitting with his back to the large window. Hart faced him. Grant's chair was between the two.

"By the way, as you're on your feet, Mr. Grant," said Furneaux, "you might just show me exactly where you were standing when you saw the face at the window."

"For the love of Mike, what's this?" gurgled Hart. "'The face at the window'; 'the postmaster's daughter.' How many more catchy cross-heads will you bring into the story?"

"Poor Adelaide Melhuish undoubtedly came here on Monday night and looked in at me while I was at work," said Grant sadly. "You know the history of my calf love three years ago, Wally."

"Shall I ever forget it? You bored me stiff about it. Then, when the crash came, you walked me off my legs in the Upper Engadine. Ugh! That night on the Forno glacier. It gives me a chill to think of it now.

Furneaux, pa.s.s the port. Your name is wrongly spelt. It should be fourneau, not Furneaux. A little oven. Hot stuff. Got me?"

"My _dear_ Hart, you flatter me," retorted the detective instantly.

"How long am I to pose here?" snapped Grant.

"Sorry," said Furneaux. "These interruptions are ba.n.a.l. Is that where you were?"

"Yes. I had my hand outstretched for a book. It's dark in this corner. When I want to find a book I light a candle, which is always placed on the ledge of the window for the purpose. The blind was not drawn that night. It seldom is. I had the book in my hand, and had found the required pa.s.sage when I chanced to look at the window and saw _her_ face."

"Do you mind reconstructing the scene. This lamp was on the table, I suppose?"

"Yes."

"Well, pull up the blind, light your candle, and find the book. Act the whole incident, in fact."

Grant obeyed. He held the candlestick until he had picked out the particular volume; then he placed it in the recess of the window, and searched through the pages of the book.

Furneaux bent forward so as to watch the rehearsal and catch the effect of the light externally. The hour was not so late as when Adelaide Melhuish, or her ghost, gazed in through one of those narrow panes, but the night was dark enough to lend the necessary _vraisemblance_. Hart, deeply interested, looked on with rapt, eager eyes. For a full minute the tableau remained thus. Then, with a rapidity born of many a close 'scape in wild lands, Hart drew a revolver from a hip pocket, and fired at the window.

He alone was in a position to see through all parts of it. Grant was still thumbing a small brown volume in the manner of one who knew that a certain pa.s.sage would be found therein but was ignorant of its exact place in the text. Furneaux, intent on his every movement, had only a side-long view of the window, which, it will be remembered, formed a tiny rectangle in a thick wall.

The revolver was a heavy-caliber weapon, and the explosion blew out the lamp. The flame of the candle flickered, owing either to the pa.s.sage of the bullet or the disturbance of the air. But it burnt steadily again within the fifth part of a second, and they all saw a starred hole in the center pane of gla.s.s of the second tier from the bottom.

"What fool's game are you playing?" shrilled Furneaux, nevertheless active as a wildcat in his spring to the French window, there to s.n.a.t.c.h at the blind and turn the k.n.o.b which controlled a lever bolt.

"Laying another ghost--one with whiskers," said Hart coolly. "I got him, too, I think."

"You must be mad, mad!" shrieked the detective, tearing open the window, and vanishing.

"For Heaven's sake, Wally, no more shooting!" cried Grant, running after Furneaux.

Minnie and her mother appeared at the dining-room door. Finding the place in semi-obscurity, and reeking with gunpowder, they screamed loudly.

"You Steynholme folk are all on the jump," said Hart. "Cheer up, fair dames! Thunder relieves the atmosphere, you know, and one live cartridge is often more effective than an ocean of talk."

"Bub-bub-but who's shot, sir?" gasped Minnie.

"A ghost, a most scoundrelly apparition, with fearsome eyes, offensive whiskers, and a hat which is a base copy of mine."