"In the meanwhile the inspector had been examining the premises: he found that the back door which gave on the yard and the one that gave on the front area were barred and locked just as Mr. Aaron had left them before he went up to bed the previous night; on the other hand the front door was still on the latch, young Mrs. Levison having apparently failed to bolt it when she came home from the ball. "In the backyard the creeper against the wall below the window of Mrs. Levison's room was certainly torn, and the miscreant undoubtedly made his escape that way, but he could not have got up to the window save with the aid of a ladder, the creeper was too slender to have supported any man's weight, and the brick wall of the house offered no kind of foothold even to a cat. The yard itself was surrounded on every side by the backyards of contiguous houses, and against the dividing walls there were clumps of Virginia creeper and anæmic shrubs such as are usually found in London backyards. "Now neither on those walls nor on the creepers and shrubs was there the slightest trace of a ladder being dragged across, or even of a man having climbed the walls or slung a rope over: there was not a twig of shrub broken or a leaf of creeper disturbed. "With regard to the safe, it must either have been open at the time that the murderer attacked Mrs. Levison, or he had found the key and opened the safe after he had committed that awful crime. Certainly the contents did not appear to have been greatly disturbed, no jewellery or other pledged goods of value were missing: Mr. Aaron could verify this by his books, but whether his mother had any money in the safe he was not in a position to say. "There was no doubt at first glance the crime did not seem to have been an ordinary one; whether robbery had been its motive, or its corollary, only subsequent investigation would reveal: for the moment the inspector contented himself with putting a few leading questions to the various members of the household, and subsequently questioning the neighbours. The public, of course, was not to know what the result of these preliminary investigations was, but the midday papers were in a position to assert that no one, with perhaps the exception of Ida Griggs, had seen or heard anything alarming during the night, and that the most minute enquiries in the neighbourhood failed to bring forth the slightest indication of how the murderer effected an entrance into the house. "The papers were also able to state that young Mrs. Levison returned from the ball in the small hours of the morning, but that Mr. Reuben Levison did not sleep in the house at all that night. §3