“The body was lying on the floor with the face upwards. A knife, which I have since found to be of a peculiar type used by architects and draughtsmen, was protruding from the chest in the region of the heart. On the side of the head was a very clearly marked contusion, obviously caused by a heavy blow from some blunt instrument, which cannot have been any object of furniture in the room. The dead man’s doctor, Dr. Manton, and the police surgeon agree that this blow, and not the knife wound, was the cause of death. The knife did not touch any vital part, and the doctors believe that the wound in the chest was inflicted after death.” “You say ‘believe.’ Are they certain?” “No; almost certain, but not so as to swear to it. I at once made an examination of the room. The dead man had evidently been sitting at his desk, and had fallen from his chair on being struck from behind on the left-hand side. On the desk was a mass of papers relating to the financial affairs of a Mr. Walter Brooklyn, a brother, I find, of Sir Vernon Brooklyn, and therefore uncle to the deceased. I have the papers here.” The inspector handed over a bundle which the superintendent placed beside him on the table. “Go on,” he said. “Lying on the floor, at some distance from the body, was this walking-stick, which may, or may not, have some connection with the crime. There were at least thirty or forty walking-sticks standing in a corner; but this was lying on the floor behind the study chair to the left—that is, at the point from which the murderer seems to have approached his victim. The servants say that they do not remember seeing the stick before; but they cannot be certain, as the deceased collected sticks. This is evidently a curio, made, I think, of rhinoceros horn.” The superintendent examined the stick for a moment, and then put it down beside him. “Dr. Manton then arrived, and, after a preliminary examination, asked that the body should be removed to the adjoining bedroom. When it was lifted up there was revealed, lying beneath it, this handkerchief which, as you see, is marked in the corner with the name ‘G. Brooklyn.’ Mr. George Brooklyn, I have ascertained, is also a nephew of Sir Vernon Brooklyn. He is, moreover, an architect by profession, and might therefore easily have been in possession of the knife found embedded in the body. Winter, the butler at the house, has often seen him using a knife of this precise pattern.” “H’m,” said the superintendent.