For many years there stood in a side street in Kiel an unpretentious old frame house which had a forbidding, almost sinister appearance, with its old-fashioned balcony and its overhanging upper stories. For the last twenty years the house had been occupied by a greatly respected widow, Madame Wolff, to whom the dwelling had come by inheritance. She lived there quietly with her one daughter, in somewhat straitened circumstances.  
What gave the house a mysterious notoriety, augmenting the sinister quality in its appearance, was the fact that one of its rooms, a corner room on the main floor, had not been opened for generations. The door was firmly fastened and sealed with plaster, as well as the window looking out upon the street. Above the door was an old inscription, dated 1603, which threatened sudden death and eternal damnation to any human being who dared to open the door or efface the inscription. Neither door nor window had been opened in the two hundred years that had passed since the inscription was put up. But for a generation back or more, the partition wall and the sealed door had been covered with wall paper, and the inscription had been almost forgotten.
 
The room adjoining the sealed chamber was a large hall, utilized only for rare important events. Such an occasion arose with the wedding of the only daughter of the house. For that evening the great hall, as it was called, was brilliantly decorated and illuminated for a ball. The building had deep cellars and the old floors were elastic. Madame Wolff had in vain endeavored to avoid using the great hall at all, for the foolish old legend of the sealed chamber aroused a certain superstitious dread in her heart, and she rarely if ever entered the hall herself. But merry Miss Elizabeth, her pretty young daughter, was passionately fond of dancing, and her mother had promised that she should have a ball on her wedding day. Her betrothed, Secretary Winther, was also a good dancer, and the two young people combated the mother's prejudice against the hall and laughed at her fear of the sealed room. They thought it would be wiser to appear to ignore the stupid legend altogether, and thus to force the world to forget it. In spite of secret misgivings Madame Wolff yielded to their arguments. And for the first time in many years the merry strains of dance music were heard in the great hall that lay next the mysterious sealed chamber.
 
The bridal couple, as well as the wedding guests, were in the gayest mood, and the ball was an undoubted success. The dancing was interrupted for an hour while supper was served in an adjoining room. After the repast the guests returned to the hall, and it was several hours more before the last dance was called. The season was early autumn and the weather still balmy. The windows had been opened to freshen the air. But the walls retained their dampness and suddenly the dancers noticed that the old wall paper which covered the partition wall between the hall and the sealed chamber had been loosened through the jarring of the building, and had fallen away from the sealed door with its mysterious inscription.
 
The story of the sealed chamber had been almost forgotten by most of those present, forgotten with many other old legends heard in childhood. The inscription thus suddenly revealed naturally aroused great interest, and there was a general curiosity to know what the mysterious closed room might hide. Conjectures flew from mouth to mouth. Some insisted that the closed door must hide the traces of a hideous murder, or some other equally terrible crime. Others suggested that perhaps the room had been used as a hiding place for garments and other articles belonging to some person who had died of a pestilence, and that the room had been sealed for fear of spreading the disease. Still others thought that in the sealed chamber there might be found a secret entrance from the cellars, which had made the room available as a hiding place for robbers or smugglers. The guests had quite forgotten their dancing in the interest awakened by the sight of the mysterious door.
 
"For mercy's sake, don't let's go too near it!" exclaimed some of the young ladies. But the majority thought it would be great fun to see what was hidden there. Most of the men said that they considered it foolish not to have opened the door long ago, and examined the room. The young bridegroom did not join in this opinion, however. He upheld the decision of his mother-in-law not to allow any attempt to effect an entrance into the room. He knew that there was a clause in the title deeds to the house which made the express stipulation that no owner should ever permit the corner room to be opened. There was discussion among the guests as to whether such a clause in a title deed could be binding for several hundred years, and many doubted its validity at any time. But most of them understood why Madame Wolff did not wish any investigation, even should any of those present have sufficient courage to dare the curse and break open the door.
 
"Nonsense! What great courage is necessary for that?" exclaimed Lieutenant Flemming Wolff, a cousin of the bride of the evening. This gentleman had a reputation that was not of the best. He was known to live mostly on debt and pawn tickets, and was of a most quarrelsome disposition. As a duelist he was feared because of his specialty. This was the ability, and the inclination, through a trick in the use of the foils, to disfigure his opponent's face badly, without at all endangering his life. In this manner he had already sadly mutilated several brave officers and students, who had had the bad luck to stand up against him. He himself was anything but pleasant to look upon, his natural plainness having been rendered repellent by a life of low debauchery. He cherished a secret grudge against the bridegroom and bitter feelings toward the bride, because the latter had so plainly shown her aversion for him when he had ventured to pay suit to her.
 
The family had not desired any open break with this disagreeable relative, and had therefore sent him an invitation to the wedding. They had taken it for granted that, under the circumstances, he would prefer to stay away. But he had appeared at the ball, and, perhaps to conceal his resentment, he had been the most indefatigable dancer of the evening. At supper he had ............