At last, on the 17th of August, a shoemaker named Emm, whom she sometimes employed to collect rents at a distance, went to Mrs. Elmsley’s lawyers and expressed his alarm at her non-appearance. The police were consulted, and decided to break into the house. Its owner was found lying dead on the floor in a lumber-room at the top of the house. Life had been extinct for some days, and death had been caused by blows on the head with a heavy plasterer’s hammer. The body lay in a pool of blood, which had also splashed the walls, and a bloody footprint was impressed on the floor, pointing outwards from the room. There were no appearances of forcible entry to the house, and the conclusion was fair that whoever had done the deed had been admitted by Mrs. Elmsley herself. A possible clue to the criminal was afforded by the several rolls of wall-paper lying about near the corpse. Mrs. Elmsley was in the habit of employing workmen on her own account to carry out repairs and decorations in her houses, and the indications pointed to her having been visited by one of these, who had perpetrated the crime. Yet the police made no useful deductions from these data.

While they were still at fault a man named Mullins, a plasterer by trade and an ex-member of the Irish constabulary, who knew Mrs. Elmsley well and had often worked for her, came forward voluntarily to throw some light on the mystery. Nearly a month had elapsed since the murder, and he declared that during this period his attention had been drawn to the man Emm and his suspicious conduct. He had watched him, had frequently seen him leave his cottage and proceed stealthily to a neighbouring brickfield, laden on each occasion with a parcel he did not bring back. Mullins, after giving this information quite unsought, led the police officers to the spot, and into a ruined outbuilding, where a strict search was made. Behind a stone slab they discovered a paper parcel containing articles which were at once identified as part of the murdered woman’s property. Mullins next accompanied the police to Emm’s house, and saw the supposed criminal arrested. But to his utter amazement the police turned on Mullins and took him also into custody. Something in his manner had aroused suspicion, and rightly, for eventually he was convicted and hanged for the crime.

Here Mullins had only himself to thank. Whatever the impulse—that strange restlessness that often affects the secret murderer, or the consuming fear that the scent was hot, and his guilt must be discovered unless he could shift suspicion—it is certain that but for his own act he would never have been arrested. It may be interesting to complete this case, and show how further suspicion settled around Mullins. The parcel found in the brickfield was tied up with a tag end of tape and a bit of a dirty apron string. A precisely similar piece of tape was discovered in Mullins’s lodgings lying upon the mantelshelf. There was an inner parcel fastened with waxed cord. The idea with Mullins was, no doubt, to suggest that the shoemaker Emm had used cobbler’s wax. But a piece of wax was also found in Mullins’s possession, besides several articles belonging to the deceased.

The most conclusive evidence was the production of a plasterer’s hammer, which was also found in Mullins’s house. It was examined under the microscope, and proved to be stained with blood. Mullins had thrown away an old boot, which chanced to be picked up under the window of a room he occupied. This boot fitted exactly into the blood-stained footprint on the floor in Mrs. Elmsley’s lumber-room; moreover, two nails protruding from the sole corresponded with two holes in the board, and, again, a hole in the middle of the sole was filled up with dried blood. So far as Emm was concerned, he was able clearly to establish an alibi, while witnesses were produced who swore to having seen Mullins coming across Stepney Green at dawn on the day of the crime with bulging pockets stuffed full of something, and going home; he appeared much perturbed, and trembled all over.

Mullins was found guilty without hesitation, and the judge expressed himself perfectly satisfied with the verdict. The case was much discussed in legal circles and in the Press, and all opinions were unanimously hostile to Mullins. The convict steadfastly denied his guilt to the last, but left a paper exonerating Emm. It is difficult to reconcile this with his denunciation of that innocent man, except on the ground of his own guilty knowledge of the real murderer. In any case, it was he himself who first lifted the veil and stupidly brought justice down upon himself.

The case of Mullins was in some points forestalled by the discovery of an Indian murder, in which the native police ingeniously entrapped the criminal to assist in his own detection. A man in Kumacu, named Mungloo, disappeared, and a neighbour, Moosa, was suspected of having made away with him. The police, unable to bring home the murder to him, caught him by bringing to him a corpse which they declared was Mungloo’s. Moosa knew better, and said so. Imprudently anxious to shift all suspicion from himself, he told the police that a certain Kitroo knew where the real corpse lay, and advised them to arrest him. Kitroo was seized, and confessed in effect that Mungloo was buried close to his house. The ground was opened, and at a considerable depth down the body was found. Now Moosa came forward and claimed the credit, as well as the proffered reward for discovery. He was, he said, the first to indicate where the body was hidden. But Kitroo turned Queen’s evidence, and swore that he had seen the murder committed by Moosa and three others, and that, as he was an eye-witness, he was compelled by them to become an accomplice. Moosa was sentenced to transportation for life. There was in his case no necessity to accuse Kitroo, and but for his officiousness the corpse would never, probably, have been brought to light.

VIII.—SOME UNAVENGED CRIMES.

There have, however, been occasions when detection has failed more or less completely. The police do not admit always that the perpetrators remain unknown; they have clues, suspicion, strong presumption, even more, but there is a gap in the evidence forthcoming, and to attempt prosecution would be to face inevitable defeat. To this day it is held at Scotland Yard that the real murderer in a mysterious murder in London in the seventies was discovered, but that the case failed before an artfully planned alibi. Sometimes an arrest is made on grounds that afford strong primâ-facie evidence, yet the case breaks down in court. The Burdell murder in 1857, in New York, was one of these. Dr. Burdell was a wealthy and eccentric dentist, owning a house in Bond Street, the greater part of which he let out in tenements. One of his tenants was a Mrs. Cunningham, to whom he became engaged, and whom, according to one account, he married. In any case, they quarrelled furiously, and Dr. Burdell warned her that she must leave the house, as he had let her rooms. Whereupon she told him significantly that he might not live to sign the agreement. Shortly afterwards he was found murdered, stabbed with fifteen wounds, and there were all the signs of a violent struggle. The wounds must