waved his hand, and they scampered away downstairs like so many rats, and we heard their shrill voices next moment in the street.
"There's more work to be got out of one of those little beggars than out of a dozen of the force," Holmes remarked. "The mere sight of an official-looking person seals men's lips. These youngsters, however, go everywhere and hear everything. They are as sharp as needles, too; all they want is organisation."
"Is it on this Brixton case that you are employing them?" I asked.
"Yes; there is a point which I wish to ascertain. It is merely a matter of time. Hullo! we are going to hear some news now with a vengeance! Here is Gregson coming down the road with beatitude written upon every feature of his face. Bound for us, I know. Yes, he is stopping. There he is!"
There was a violent peal at the bell, and in a few seconds the fair-haired detective came up the stairs, three steps at a time, and burst into our sitting-room.
"My dear fellow," he cried, wringing Holmes' unresponsive hand, "congratulate me! I have made the whole thing as clear as day."
A shade of anxiety seemed to me to cross my companion's expressive face.
"Do you mean that you are on the right track?" he asked.
"The right track! Why, sir, we have the man under lock and key."
"And his name is?"
"Arthur Charpentier, sub-lieutenant in Her Majesty's navy," cried Gregson, pompously, rubbing his fat hands and inflating his chest.
Sherlock Holmes gave a sigh of relief, and relaxed into a smile.
"Take a seat, and try one of these cigars," he said. "We are anxious to know how you managed it. Will you have some whiskey and water?"
"I don't mind if I do," the detective answered. "The tremendous exertions which I have gone through during the last day or two have worn me out. Not so much bodily exertion, you understand, as the strain upon the mind. You will appreciate that, Mr. Sherlock Holmes, for we are both brain-workers."
"You do me too much honour," said Holmes, gravely. "Let us hear how you arrived at this most gratifying result."
The detective seated himself in the arm-chair, and puffed complacently at his cigar. Then suddenly he slapped his thigh in a paroxysm of amusement.
"The fun of it is," he cried, "that that fool Lestrade, who thinks himself so smart, has gone off upon the wrong track altogether. He is after the secretary Stangerson, who had no more to do with the crime than the babe unborn. I have no doubt that he has caught him by this time."
The idea tickled Gregson so much that he laughed until he choked.
"And how did you get your clue?"
"Ah, I'll tell you all about it. Of course, Doctor Watson, this is strictly between ourselves. The first difficulty which we had to contend with was the finding of this American's antecedents. Some people would have waited until their advertisements were answered, or until parties came forward and volunteered information. That is not Tobias Gregson's way of going to work. You remember the hat beside the dead man?"
"Yes," said Holmes; "by John Underwood and Sons, 129, Camberwell Road."
Gregson looked quite crest-fallen.
"I had no idea that you noticed that," he said. "Have you been there?"
"No."
"Ha!" cried Gregson, in a relieved voice; "you should never neglect a chance, however small it may seem."
"To a great mind, nothing is little," remarked Holmes, sententiously.
"Well, I went to Underwood, and asked him if he had sold a hat of that size and description. He looked over his books, and came on it at once. He had sent the hat to a Mr. Drebber, residing at Charpentier's Boarding Establishment, Torquay Terrace. Thus I got at his address."
"Smart—very smart!" murmured Sherlock Holmes.
"I next called upon Madame Charpentier," continued the detective. "I found her very pale and distressed. Her daughter was in the room, too—an uncommonly fine girl she is, too; she was looking red about the eyes and her lips trembled as I spoke to her. That didn't escape my notice. I began to smell a rat. You know the feeling, Mr. Sherlock Holmes, when you come upon the right scent—a kind of thrill in your nerves. 'Have you heard of the mysterious death of your late boarder Mr. Enoch J. Drebber, of Cleveland?' I asked.
"The mother nodded. She didn't seem able to get out a word. The daughter burst into tears. I felt more than ever that these people knew something of the matter.
"'At what o'clock did Mr. Drebber leave your house for the train?' I asked.
"'At eight o'clock,' she said, gulping in her throat to keep down her agitation. 'His secretary, Mr. Stangerson, said that there were two trains —one at 9.15 and one at 11. He was to catch the first.'
"'And was that the last which you saw of him?'
"A terrible change came over the woman's face as I asked the question. Her features turned perfectly livid. It was some seconds before she could get out the single word 'Yes'—and when it did come it was in a husky unnatural tone.
"There was silence for a moment, and then the daughter spoke in a calm clear voice.
"'No good can ever come of falsehood, mother,' she said. 'Let us be frank with this gentleman. We did see Mr. Drebber again.'
"'God forgive you!' cried Madame Charpentier, throwing up her hands and sinking back in her chair. 'You have murdered your brother.'
"'Arthur would rather that we spoke the truth,' the girl answered firmly.
"'You had best tell me all about it now,' I said. 'Half-confidences are worse than none. Besides, you do not know how much we know of it.'
"'On your head be it, Alice!' cried her mother; and then, turning to me, 'I will tell you all, sir. Do not imagine that my agitation on behalf of my son arises from any fear lest he should have had a hand in this terrible affair. He is utterly innocent of it. My dread is, however, that in your eyes and in the eyes of others he may appear to be compromised. That however is surely impossible. His high character, his profession, his antecedents would all forbid it.'
"'Your best way is to make a clean breast of the facts,' I answered. 'Depend upon it, if your son is innocent he will be none the worse.'
"'Perhaps, Alice, you had better leave us together,' she said, and her daughter withdrew. 'Now, sir,' she continued, 'I had no intention of telling you all this, but since my poor daughter has disclosed it I have no alternative. Having once decided to speak, I will tell you all without omitting any particular.'
"'It is your wisest course,' said I.
"'Mr. Drebber has been with us nearly three weeks. He and his secretary, Mr. Stangerson, had been travelling on the Continent. I noticed a "Copenhagen" label upon each of their trunks, showing that that had been their last stopping place. Stangerson was a quiet reserved man, but his employer, I am sorry to say, was far otherwise. He was coarse in his habits and brutish in his ways. The very night of his arrival he became very much the worse for drink, and, indeed, after twelve o'clock in the day he could hardly ever be said to be sober. His manners towards the maid-servants were disgustingly free and familiar. Worst of all, he speedily assumed the same attitude towards my daughter, Alice, and spoke to her more than once in a way which, fortunately, she is too innocent to understand. On one occasion he actually seized her in his arms and embraced her—an outrage which caused his own secretary to reproach him for his unmanly conduct.'
"'But why did you stand all this,' I asked. 'I suppose that you can get rid of your boarders when you wish.'
"Mrs. Charpentier blushed at my pertinent question. 'Would to God that I had given him notice on the very day that he came,' she said. 'But it was a sore temptation. They were paying a pound a day each—£14 a week, and this