The cook, however—her name was Mary Kenway—opened her door, which commanded in perspective a full view of the corridor leading to the top of the stairs, and she saw, or thought she saw, a shadowy figure standing in this corridor near the top of the stairs. Feeling a bit nervous, she shut the door hurriedly, and said to her fellow-servants, who shared the room with her:

‘One of those fools is playing at ghosts or something. Well, when the wine’s in, the wit’s out.’

She and her companions then got into bed, and some time afterwards were startled by a loud knocking at their door. The cook hurriedly procured a light, and on asking who was there, and being informed it was Captain Jarvis, and that he was searching for the master, who had disappeared, she slipped on her clothes and opened the door.

The temporary servants, of whom there were three, were sleeping in a room above her. They had indulged somewhat too freely, and it was a considerable time before they could be made to understand that something dreadful had happened.

With these details, and the statement of Captain Jarvis, I felt I was in a position to begin my researches.

If Captain Jarvis’s statement was true, and there wasn’t the slightest reason to doubt it, for it was in the main corroborated by Robert Thomson and others, the whole affair was shrouded in considerable mystery. Indeed, I think it was one of the strangest cases I ever had to do with. Maggie Stiven had been foully done to death by some subtle, deft, and treacherous assassin. She had been struck with great force, and the breaking of the weapon showed the fury with which her murderer had done his damnable work.

The skipper’s statement that when he opened the dining-room door he heard a sigh and sort of groan was compatible with the nature of the wound, for though the heart was injured, the fact of the piece of steel remaining in the wound would prevent a sudden emptying of the heart, and she might have lived after being struck five to ten minutes. The shadowy figure which Jarvis said he saw ‘gliding’ up the stairs was no doubt the assassin, although Jarvis—his imagination having been fired—thought it a supernatural appearance.

The cook also spoke of ‘a shadowy figure,’ and thought that some of the guests were ‘playing at ghosts.’ This independent testimony suggested that there was something curious and out of the common about the figure, and I was led to infer that the person who had done the deed was small, light of foot, and agile of movement. When he struck Maggie down he had probably been lurking in the drawing-room, the door of which, as I have already described, was just at the foot of the stairs, or he may have been concealed in the recess under the stairs. Whichever way it was, the girl had not mounted the stairs, and must have been stabbed the moment she reached the mat where the body was found, and before she had time to get her feet on the stairs to go up.

Now came the question, Why was she killed? Her going in search of Raymond Balfour was quite unpremeditated, and the assassin could hardly have known that she was coming out of the room.

Why, then, did he kill her? On the face of it, it seemed to be an unprovoked and brutal crime without any reason. But a little pondering, and a careful weighing of all the pros and cons, led me to the conclusion that the deed was not as purposeless as it seemed. If it was the result of madness, there was certainly method in the madness.