The dull winter sun seemed only to make the gloom of the dark vestibule more visible. Johann turned up the light, and Horn, who had visited the Professor several times and knew the situation of the rooms, went at once to the heavy, carved and iron trimmed door of the study. He attempted to open the door, but it resisted all pressure. The heavy key was in the inner side of the big lock with its medieval iron ornamentation. But the key was turned so that the lower part of the lock was free, a round opening of unusual size. Horn made sure of this by holding a lighted match to the door.
“You are right,” he said to the valet, “the door is locked from the inside. We’ll have to go through the bedroom. Johann, bring me a chisel or a hatchet. Muller, you stay here and open the door when the doctor comes.”
Muller nodded. Johann disappeared, returning in a few moments with a small hatchet, and followed the commissioner through the dining-room. It was an attractive apartment with its high wooden panelling and its dainty breakfast table. But a slight shiver ran through the commissioner’s frame as he realised that some misfortune, some crime even might be waiting for them on the other side of the closed door. The bedroom door also was locked on the inside, and after some moments of knocking and calling, Horn set the hatchet to the framework just as the bell of the house-door pealed out.
With a cracking and tearing of wood the bedroom door fell open, and in the same moment Muller and the physician passed through the dining-room. Johann hurried into the bedroom to open the window-shutters, and the others gathered in the doorway. A single look showed each of the men that the bed was untouched, and they passed on through the room. The door from the bedroom to the study stood open. In the latter room the shutters were tightly closed, and the lamp had long since gone out. But sufficient light fell through the open bedroom door for the men to see the figure of the Professor seated at his desk, and when Johann had opened the shutters, it was plain to all that the silent figure before them was that of a corpse.
“Heart disease, probably,” murmured the physician, as he touched the icy forehead. Then he felt the pulse of the stiffened hand from which the pen had fallen in the moment of death, raised the drooping head and lifted up the half-closed eyelids. The eyes were glazed.