"Your sister Sarah lives, I think you said, at New Street, Wallington? Good-bye, and I am very sorry that you should have been troubled over a case with which, as you say, you have nothing whatever to do."

There was a cab passing as we came out, and Holmes hailed it.

"How far to Wallington?" he asked.

"Only about a mile, sir."

"Very good. Jump in, Watson. We must strike while the iron is hot. Simple as the case is, there have been one or two very instructive details in connection with it. Just pull up at a telegraph office as you pass, cabby."

Holmes sent off a short wire and for the rest of the drive lay back in the cab, with his hat tilted over his nose to keep the sun from his face. Our drive pulled up at a house which was not unlike the one which we had just quitted. My companion ordered him to wait, and had his hand upon the knocker, when the door opened and a grave young gentleman in black, with a very shiny hat, appeared on the step.

"Is Miss Cushing at home?" asked Holmes.

"Miss Sarah Cushing is extremely ill," said he. "She has been suffering since yesterday from brain symptoms of great severity. As her medical adviser, I cannot possibly take the responsibility of allowing anyone to see her. I should recommend you to call again in ten days." He drew on his gloves, closed the door, and marched off down the street.

"Well, if we can't we can't," said Holmes, cheerfully.

"Perhaps she could not or would not have told you much."

"I did not wish her to tell me anything. I only wanted to look at her. However, I think that I have got all that I want. Drive us to some decent hotel, cabby, where we may have some lunch, and afterwards we shall drop down upon friend Lestrade at the police-station."

We had a pleasant little meal together, during which Holmes would talk about nothing but violins, narrating with great exultation how he had purchased his own Stradivarius, which was worth at least five hundred guineas, at a Jew broker's in Tottenham Court Road for fifty-five shillings. This led him to Paganini, and we sat for an hour over a bottle of claret while he told me anecdote after anecdote of that extraordinary man. The afternoon was far advanced and the hot glare had softened into a mellow glow before we found ourselves at the police-station. Lestrade was waiting for us at the door.

"A telegram for you, Mr. Holmes," said he.

"Ha! It is the answer!" He tore it open, glanced his eyes over it, and crumpled it into his pocket. "That's all right," said he.

"Have you found out anything?"

"I have found out everything!"

"What!" Lestrade stared at him in amazement. "You are joking."

"I was never more serious in my life. A shocking crime has been committed, and I think I have now laid bare every detail of it."

"And the criminal?"

Holmes scribbled a few words upon the back of one of his visiting cards and threw it over to Lestrade.

"That is the name," he said. "You cannot effect an arrest until to-morrow night at the earliest. I should prefer that you do not mention my name at all in connection with the case, as I choose to be only associated with those crimes which present some difficulty in their solution. Come on, Watson." We strode off together to the station, leaving Lestrade still staring with a delighted face at the card which Holmes had thrown him.

"The case," said Sherlock Holmes as we chatted over our cigars that night in our rooms at Baker Street, "is one where, as in the investigations which you have chronicled under the names of 'A Study in Scarlet' and of 'The Sign of Four,' we have been compelled to reason backward from effects to causes. I have written to Lestrade asking him to supply us with the details which are now wanting, and which he will only get after he had secured his man. That he may be safely trusted to do, for although he is absolutely devoid of reason, he is as tenacious as a bulldog when he once understands what he has to do, and indeed, it is just this tenacity which has brought him to the top at Scotland Yard."

"Your case is not complete, then?" I asked.

"It is fairly complete in essentials. We know who the author of the revolting business is, although one of the victims still escapes us. Of course, you have formed your own conclusions."

"I presume that this Jim Browner, the steward of a Liverpool boat, is the man whom you suspect?"

"Oh! it is more than a suspicion."

"And yet I cannot see anything save very vague indications."

"On the contrary, to my mind nothing could be more clear. Let me run over the principal steps. We approached the case, you remember, with an absolutely blank mind, which is always an advantage. We had formed no theories. We were simply there to observe and to draw inferences from our observations. What did we see first? A very placid and respectable lady, who seemed quite innocent of any secret, and a portrait which showed me that she had two younger sisters. It instantly flashed across my mind that the box might have been meant for one of these.