It was about five o'clock on a hot August afternoon, that a tall, thin man, wearing a weedy beard, and made conspicuous by an ill-fitting frock-coat and an almost napless silk hat, walked into the entrance hall of the Great Portland Square Museum. He carried no stick, and, looking about him, as though unfamiliar with the building, he ultimately mounted the principal staircase, walking with a pronounced stoop, and at intervals coughing with a hollow sound.
His gaunt figure attracted the attention of several people, among them the attendant in the Egyptian room. Hardened though he was to the eccentric in humanity, the man who hung so eagerly over the mummies of departed kings and coughed so frequently, nevertheless secured his instant attention. Visitors of the regulation type were rapidly thinning out, so that the gaunt man, during the whole of the time he remained in the room, was kept under close surveillance by the vigilant official. Seeing him go in the direction of the stairs, the attendant supposed the strange visitor to be about to leave the Museum. But that he did not immediately do so was shown by subsequent testimony.
The day's business being concluded, the staff of police who patrol nightly the Great Square Museum duly filed into the building. A man is placed in each room, it being his duty to examine thoroughly every nook and cranny; having done which, all doors of communication are closed, the officer on guard in one room being unable to leave his post or to enter another. Every hour the inspector, a sergeant, and a fireman make a round of the entire building: from which it will be seen that a person having designs on any of the numerous treasures of the place would require more than average ingenuity to bring his plans to a successful issue.
In recording this very singular case, the only incident of the night to demand attention is that of the mummy in the Etruscan room.
Persons familiar with the Great Portland Square Museum will know that certain of the tombs in the Etruscan room are used as receptacles for Egyptian mummies that have, for various reasons, never been put upon exhibition. Anyone who has peered under the partially raised lid of a huge sarcophagus and found within the rigid form of a mummy, will appreciate the feelings of the man on night duty amid surroundings so lugubrious. The electric light, it should be mentioned, is not extinguished until the various apartments have been examined, and its extinction immediately precedes the locking of the door.
The constable in the Etruscan room glanced into the various sarcophagi and cast the rays of his bull's-eye lantern into the shadows of the great stone tombs. Satisfied that no one lurked there, he mounted the steps leading up to the Roman gallery, turning out the lights in the room below from the switch at the top. The light was still burning on the ground floor, and the sergeant had not yet arrived with the keys. It was whilst the man stood awaiting his coming that a singular thing occurred.
From somewhere within the darkened chamber beneath, there came the sound of a hollow cough!