He stopped in front of a certain number, and comparing it with the tattered envelope which he held in his hand, finally entered. The lift-boy, who was lounging in the little hall, looked at him in surprise.

“I want to find Madame Helga,” the young man said shortly. “This is number 38, isn’t it?”

The boy looked at him doubtfully, and led the way to the lift.

“Third floor,” he said. “I’ll take you up.”

The lift stopped, and Bertrand Saton found in front of him a door upon which was a small brass plate, engraved simply with the name of Helga. He knocked twice, and received no answer. Then, turning the handle, he entered, and stood looking about him with some curiosity.

It was a small room, luxuriously but sombrely furnished. Heavy curtains were drawn more than half-way across the windows, and the room was so dark that at first he was not sure whether it was indeed empty. On a small black oak table in the middle of the rich green carpet, stood a crystal ball. There was nothing else unusual about the apartment, except the absence of any pictures upon the walls, and a faint aromatic odor, as though somewhere dried weeds were being burned.

Some curtains opposite him were suddenly thrust aside. A woman stood there looking at him. She was of middle height, fair, with a complexion which even in that indistinct light he could see owed little of its smoothness to nature. She wore a loose gown which seemed to hang from her shoulders, of some soft green material, drawn around her waist with a girdle. Her eyes were deep-set and penetrating.

“You wish to see me?” she asked.

He held out the note.