"Not at all!" the old monster returned, still laughing. "I know four lower. Now, if you will pardon me, I have some important papers to put away in my safe... and some worthless ones to burn in the stove."

"He still had the old will when he confronted them?" Holmes asked. He seemed more interested than startled.

"Yes."

"He could have burned it as soon as the new one was signed and witnessed," Holmes mused. "He had all the previous afternoon and evening to do so. But he didn't, did he? Why not? How say you on that question, Lestrade?"

"He hadn't had enough of teasing them even then, I suppose. He was offering them a chance-a temptation temptation-he believed all would refuse."

"Perhaps he believed one of them would not refuse," Holmes said. "Hasn't that idea at least crossed your mind?" He turned his head and searched my face with the momentary beam of his brilliant-and somehow chilling-regard. "Either "Either of your minds? Isn't it possible that such a black creature might hold out such a temptation, knowing that if one of his family were to succ.u.mb to it and put him out of his misery-Stephen seems most likely from what you say-that one might be caught... and swing for the crime of patricide?" of your minds? Isn't it possible that such a black creature might hold out such a temptation, knowing that if one of his family were to succ.u.mb to it and put him out of his misery-Stephen seems most likely from what you say-that one might be caught... and swing for the crime of patricide?"

I stared at Holmes in silent horror.

"Never mind," Holmes said. "Go on, Inspector-it's time for the locked room to make its appearance, I believe."

The four of them had sat in paralyzed silence as the old man made his long, slow way up the corridor to his study. There were no sounds but the thud of his cane, the laboured rattle of his breathing, the plaintive miaow miaow of a cat in the kitchen, and the steady beat of the pendulum in the parlour clock. Then they heard the squeal of hinges as Hull opened his study door and stepped inside. of a cat in the kitchen, and the steady beat of the pendulum in the parlour clock. Then they heard the squeal of hinges as Hull opened his study door and stepped inside.

"Wait!" Holmes said sharply, sitting forward. "No one actually saw saw him go in, did they?" him go in, did they?"

"I'm afraid that's not so, old chap," Lestrade returned. "Mr. Oliver Stanley, Lord Hull's valet, had heard Lord Hull's progress down the hall. He came from Hull's dressing chamber, went to the gallery railing, and called down to ask if all was well. Hull looked up-Stanley saw him as plainly as I see you right now, old fellow-and said all was absolutely tip-top. Then he rubbed the back of his head, went in, and locked the study door behind him.

"By the time his father had reached the door (the corridor is quite long and it may have taken him as much as two minutes to make his way up it unaided) Stephen had shaken off his stupor and had gone to the parlour door. He saw the exchange between his father and his father's man. Of course Lord Hull was back-to, but Stephen heard his father's voice and described the same characteristic gesture: Hull rubbing the back of his head."

"Could Stephen Hull and this Stanley fellow have spoken before the police arrived?" I asked-shrewdly, I thought.

"Of course they could," Lestrade said wearily. "They probably did. But there was no collusion."

"You feel sure of that?" Holmes asked, but he sounded uninterested.

"Yes. Stephen Hull would lie very well, I think, but Stanley would do it very badly. Accept my professional opinion or not, just as you like, Holmes."

"I accept it."

So Lord Hull pa.s.sed into his study, the famous locked room, and all heard the click of the lock as he turned the key-the only key there was to that sanctum sanctorum. sanctum sanctorum. This was followed by a more unusual sound: the bolt being drawn across. This was followed by a more unusual sound: the bolt being drawn across.

Then, silence.

The four of them-Lady Hull and her sons, so shortly to be blue-blooded paupers-looked at one another in similar silence. The cat miaowed again from the kitchen and Lady Hull said in a distracted voice that if the housekeeper wouldn't give that cat a bowl of milk, she supposed she must. She said the sound of it would drive her mad if she had to listen to it much longer. She left the parlour. Moments later, without a word among them, the three sons also left. William went to his room upstairs, Stephen wandered into the music room, and Jory went to sit upon a bench beneath the stairs where, he had told Lestrade, he had gone since earliest childhood when he was sad or had matters of deep difficulty to think over.

Less than five minutes later a shriek arose from the study. Stephen ran out of the music room, where he had been plinking out isolated notes on the piano. Jory met him at the study door. William was already halfway downstairs and saw them breaking in when Stanley, the valet, came out of Lord Hull's dressing room and went to the gallery railing for the second time. Stanley has testified to seeing Stephen Hull burst into the study; to seeing William reach the foot of the stairs and almost fall on the marble; to seeing Lady Hull come from the dining-room doorway with a pitcher of milk still in one hand. Moments later the rest of the servants had gathered.

"Lord Hull was slumped over his writing-desk with the three brothers standing by. His eyes were open, and the look in them... I believe it was surprise. Again, you are free to accept or reject my opinion just as you like, but I tell you it looked very much like surprise to me. Clutched in his hands was his will... the old one. Of the new one there was no sign. And there was a dagger in his back."

With this, Lestrade rapped for the driver to go on.

We entered the house between two constables as stone-faced as Buckingham Palace sentinels. Here to begin with was a very long hall, floored in black and white marble tiles like a chessboard. They led to an open door at the end, where two more constables were posted: the entrance to the infamous study. To the left were the stairs, to the right two doors: the parlour and the music room, I guessed.

"The family is gathered in the parlour," Lestrade said.

"Good," Holmes said pleasantly. "But perhaps Watson and I might first have a look at the scene of the crime?"

"Shall I accompany you?"

"Perhaps not," Holmes said. "Has the body been removed?"

"It was still here when I left for your lodgings, but by now it almost certainly will be gone."

"Very good."

Holmes started away. I followed. Lestrade called, "Holmes!"

Holmes turned, eyebrows raised.

"No secret panels, no secret doors. For the third time, take my word or not, as you like."

"I believe I'll wait until... " Holmes began and then his breath began to hitch. He scrambled in his pocket, found a napkin probably carried absently away from the eating-house where we had dined the previous evening, and sneezed mightily into it. I looked down and saw a large, scarred tomcat, as out of place here in this grand hall as would have been one of those urchins of whom I had been thinking earlier, twining about Holmes's legs. One of its ears was laid back against its scarred skull. The other was gone, lost in some long-ago alley battle, I supposed.

Holmes sneezed repeatedly and kicked out at the cat. It went with a reproachful backward look rather than with the angry hiss one might have expected from such an old campaigner. Holmes looked at Lestrade over the napkin with reproachful, watery eyes. Lestrade, not in the least put out of countenance, thrust his head forward and grinned like a monkey. "Ten, Holmes," he said. "Ten. "Ten. House is full of felines. Hull loved 'em." And with that he walked off. House is full of felines. Hull loved 'em." And with that he walked off.

"How long have you suffered this affliction, old fellow?" I asked. I was a bit alarmed.

"Always," he said, and sneezed again. The word allergy allergy was hardly known all those years ago, but that, of course, was his problem. was hardly known all those years ago, but that, of course, was his problem.

"Do you want to leave?" I asked. I had once seen a case of near asphyxiation as the result of such an aversion, this one to sheep but otherwise similar in all respects.

"He'd like that," Holmes said. I did not need him to tell me whom he meant. Holmes sneezed once more (a large red welt was appearing on his normally pale forehead) and then we pa.s.sed between the constables at the study door. Holmes closed it behind him.

The room was long and relatively narrow. It was at the end of something like a wing, the main house spreading to either side from an area roughly three-quarters of the way down the hall. There were windows on two sides of the study and it was bright enough in spite of the gray, rainy day. The walls were dotted with colourful shipping charts in handsome teak frames, and among them was mounted an equally handsome set of weather instruments in a bra.s.s-bound, gla.s.s-fronted case. It contained an anemometer (Hull had the little whirling cups mounted on one of the roofpeaks, I supposed), two thermometers (one registering the outdoor temperature and the other that of the study), and a barometer much like the one which had fooled Holmes into believing the bad weather was about to break. I noticed the gla.s.s was still rising, then looked outside. The rain was falling harder than ever, rising gla.s.s or no rising gla.s.s. We believe we know a great lot, with our instruments and things, but I was old enough then to believe we don't know half as much as we think we do, and old enough now to believe we never will.

Holmes and I both turned to look at the door. The bolt was torn free, but leaning inward, as it should have been. The key was still in the study-side lock, and still turned.

Holmes's eyes, watering as they were, were everywhere at once, noting, cataloguing, storing.

"You are a little better," I said.

"Yes," he said, lowering the napkin and stuffing it indifferently back into his coat pocket. "He may have loved 'em, but he apparently didn't allow 'em in here. Not on a regular basis, anyway. What do you make of it, Watson?"

Although my eyes were slower than his, I was also looking around. The double windows were all locked with thumb-turns and small bra.s.s side-bolts. None of the panes had been broken. Most of the framed charts and the box of weather instruments were between these windows. The other two walls were filled with books. There was a small coal-stove but no fireplace; the murderer hadn't come down the chimney like Father Christmas, not unless he was narrow enough to fit through a stovepipe and clad in an asbestos suit, for the stove was still very warm.

The desk stood at one end of this long, narrow, well-lit room; the opposite end was a pleasantly bookish area, not quite a library, with two high-backed upholstered chairs and a coffee-table between them. On this table was a random stack of volumes. The floor was covered with a Turkish rug. If the murderer had come through a trap-door, I hadn't the slightest idea how he'd gotten back under that rug without disarranging it... and it was not not disarranged, not in the slightest: the shadows of the coffee-table legs lay across it without even a hint of a ripple. disarranged, not in the slightest: the shadows of the coffee-table legs lay across it without even a hint of a ripple.

"Did you believe it, Watson?" Holmes asked, snapping me out of what was almost a hypnotic trance. Something... something about that coffee-table.."Believe what, Holmes?"

"That all four of them simply walked out of the parlour, in four different directions, four minutes before the murder?"

"I don't know," I said faintly.

"I don't believe it; not for a mo-" He broke off. "Watson! Are you all right?" don't believe it; not for a mo-" He broke off. "Watson! Are you all right?"

"No," I said in a voice I could hardly hear myself. I collapsed into one of the library chairs. My heart was beating too fast. I couldn't seem to catch my breath. My head was pounding; my eyes seemed to have suddenly grown too large for their sockets. I could not take them from the shadows of the coffee-table legs upon the rug. "I am most... definitely not... all right."

At that moment Lestrade appeared in the study doorway. "If you've looked your fill, H-" He broke off. "What the devil's the matter with Watson?"

"I believe," said Holmes in a calm, measured voice, "that Watson has solved the case. Have you, Watson?"

I nodded my head. Not the entire case, perhaps, but most of it. I knew who; I knew how.

"Is it this way with you, Holmes?" I asked. "When you... see?"

"Yes," he said, "though I usually manage to keep my feet."

"Watson's solved the case?" Lestrade said impatiently. "Bah! Watson's offered a thousand solutions to a hundred cases before this, Holmes, as you very well know, and all of them wrong. It's his solved the case?" Lestrade said impatiently. "Bah! Watson's offered a thousand solutions to a hundred cases before this, Holmes, as you very well know, and all of them wrong. It's his bete noire. bete noire. Why, I remember just this last summer-" Why, I remember just this last summer-"

"I know more about Watson than you ever shall," Holmes said, "and this time he has. .h.i.t upon it. I know the look." He began to sneeze again; the cat with the missing ear had wandered into the room through the door which Lestrade had left open. It moved directly toward Holmes with an expression of what seemed to be affection on its ugly face.

"If this is how it is for you," I said, "I'll never envy you again, Holmes. My heart should burst."

"One becomes inured even to insight," Holmes said, with not the slightest trace of conceit in his voice. "Out with it, then... or shall we bring in the suspects, as in the last chapter of a detective novel?"

"No!" I cried in horror. I had seen none of them; I had no urge to. "Only I think I must show show you how it was done. If you and Inspector Lestrade will only step out into the hall for a moment... " you how it was done. If you and Inspector Lestrade will only step out into the hall for a moment... "

The cat reached Holmes and jumped into his lap, purring like the most satisfied creature on earth.

Holmes exploded into a perfect fusillade of sneezes. The red patches on his face, which had begun to fade, burst out afresh. He pushed the cat away and stood up.

"Be quick, Watson, so we can leave this d.a.m.ned place," he said in a m.u.f.fled voice, and left the room with his shoulders in an uncharacteristic hunch, his head down, and with not a single look back. Believe me when I say that a little of my heart went with him.

Lestrade stood leaning against the door, his wet coat steaming slightly, his lips parted in a detestable grin. "Shall I take Holmes's new admirer, Watson?"

"Leave it," I said, "and close the door when you go out."

"I'd lay a fiver you're wasting our time, old man," Lestrade said, but I saw something different in his eyes: if I'd offered to take him up on the wager, he would have found a way to squirm out of it.

"Close the door," I repeated. "I shan't be long."

He closed the door. I was alone in Hull's study... except for the cat, of course, which was now sitting in the middle of the rug, tail curled neatly about its paws, green eyes watching me.

I felt in my pockets and found my own souvenir from last night's dinner-men on their own are rather untidy people, I fear, but there was a reason for the bread other than general slovenliness. I almost always kept a crust in one pocket or the other, for it amused me to feed the pigeons that landed outside the very window where Holmes had been sitting when Lestrade drove up.

"p.u.s.s.y," said I, and put the bread beneath the coffee-table-the coffee-table to which Lord Hull would have presented his back when he sat down with his two wills, the wretched old one and the even more wretched new one. "Puss-puss-puss."

The cat rose and walked languidly beneath the table to investigate the crust.

I went to the door and opened it. "Holmes! Lestrade! Quickly!"

They came in.

"Step over here," I said, and walked to the coffee-table.

Lestrade looked about and began to frown, seeing nothing; Holmes, of course, began to sneeze again. "Can't we have that wretched thing out of here?" he managed from behind the table-napkin, which was now quite soggy.

"Of course," said I. "But where is the wretched thing, Holmes?" "But where is the wretched thing, Holmes?"

A startled expression filled his wet eyes. Lestrade whirled, walked toward Hull's writing-desk, and peered behind it. Holmes knew his reaction should not have been so violent if the cat had been on the far side of the room. He bent and looked beneath the coffee-table, saw nothing but the rug and the bottom row of the two bookcases opposite, and straightened up again. If his eyes had not been spouting like fountains, he should have seen all then; he was, after all, right on top of it. But one must also give credit where credit is due, and the illusion was devilishly good. The empty s.p.a.ce beneath his father's coffee-table had been Jory Hull's masterpiece.

"I don't-" Holmes began, and then the cat, who found my friend much more to its liking than any stale crust of bread, strolled out from beneath the table and began once more to twine ecstatically about his ankles. Lestrade had returned, and his eyes grew so wide I thought they might actually fall out. Even having understood the trick, I myself was amazed. The scarred tomcat seemed to be materializing out of thin air; head, body, white-tipped tail last.

It rubbed against Holmes's leg, purring as Holmes sneezed.

"That's enough," I said. "You've done your job and may leave."

I picked it up, took it to the door (getting a good scratch for my pains), and tossed it unceremoniously into the hall. I shut the door behind it.

Holmes was sitting down. "My G.o.d," he said in a nasal, clogged voice. Lestrade was incapable of any speech at all. His eyes never left the table and the faded Turkish rug beneath its legs: an empty s.p.a.ce that had somehow given birth to a cat.

"I should have seen," Holmes was muttering. "Yes... but you... how did you understand so quickly?" quickly?" I detected the faintest hurt and pique in that voice, and forgave it at once. I detected the faintest hurt and pique in that voice, and forgave it at once.

"It was those," those," I said, and pointed at the rug. I said, and pointed at the rug.

"Of course!" Holmes nearly groaned. He slapped his welted forehead. "Idiot! I'm a perfect idiot!" idiot!"

"Nonsense," I said tartly. "With a houseful of cats-and one who has apparently picked you out for a special friend-I suspect you were seeing ten of everything."

"What about the rug?" Lestrade asked impatiently. "It's very nice, I'll grant, and probably expensive, but-"

"Not the rug," rug," I said. "The I said. "The shadows" shadows"

"Show him, Watson," Holmes said wearily, lowering the napkin into his lap.

So I bent and picked one of them off the floor.

Lestrade sat down in the other chair, hard, like a man who has been unexpectedly punched.

"I kept looking at them, you see," I said, speaking in a tone which could not help being apologetic. This seemed all wrong. It was Holmes's job to explain the whos and hows at the end of the investigation. Yet while I saw that he now understood everything, I knew he would refuse to speak in this case. And I suppose a part of me-the part that knew I would probably never have another chance to do something like this-wanted to be the one to explain. And the cat was rather a nice touch, I must say. A magician could have done no better with a rabbit and a top-hat. to be the one to explain. And the cat was rather a nice touch, I must say. A magician could have done no better with a rabbit and a top-hat.

"I knew something was wrong, but it took a moment for it to sink in. This room is extremely bright, but today it's pouring down rain. Look around and you'll see that not a single object in this room casts a shadow... except for these table-legs." except for these table-legs."

Lestrade uttered an oath.

"It's rained for nearly a week," I said, "but both Holmes's barometer and the late Lord Hull's"-I pointed to it-"said that we could expect sun today. In fact, it seemed a sure thing. So he added the shadows as a final touch."

"Who did?"

"Jory Hull," Holmes said in that same weary tone. "Who else?"

I bent down and reached my hand beneath the right end of the coffee-table. It disappeared into thin air, just as the cat had appeared. Lestrade uttered another startled oath. I tapped the back of the canvas stretched tightly between the forward legs of the coffee-table. The books and the rug bulged and rippled, and the illusion, nearly perfect as it had been, was instantly dispelled.

Jory Hull had painted the nothing under his father's coffee-table, had crouched behind the nothing as his father entered the room, locked the door, and sat at his desk with his two wills, and at last had rushed out from behind the nothing, dagger in hand.