The employment bureau immediately supplied her demand. The woman who was sent was, in secret, more than she seemed to be. She was connected with the Paris police department and was a detective of some cleverness. Almost immediately she took up her new activities.

Three days later she reported to Agent Gard from America. She had found in her red-haired mistress a woman who led a quiet life that seemed in no way irregular, who followed a normal routine of housekeeping, walking, shopping. She seemed to have no acquaintances. But one thing irregular appeared in the whole establishment. There was one room in the rear of the suite which remained locked. The mistress had stated that it was a storage room. This seemed somewhat strange, as it must look out upon the interior court and therefore be the most attractive room of them all. It seemed peculiar that such a room should be used for storage and, even so, that it should be locked up.

Gard put together the two facts—the locked room and the short hours of the servant—and drew a conclusion. It was as the result of this conclusion that he asked the woman detective to install a dictagraph beneath the table in the sunny little dining room just off the apartment of the locked door. This was easy of accomplishment during the hour of the afternoon stroll of the mistress of the house. The wires of the dictagraph were run across the street and into the watch-tower rooms of the special agent.

When the dinner hour approached that evening Billy Gard sat patiently with the headpiece of the dictagraph securely in place. The first sound that he caught from across the street was that of feet, supposedly those of the woman of the Titian hair, passing back and forth about the room, then an occasional snatch of a song while she worked. He gathered that she was arranging for the evening meal, the servant having gone home hours before.

Ten minutes passed and then there came over the wire a sound that might have been a bit surprising to the observer of this ultra quiet household, the watcher at the entrance through which none had passed unseen since the day it was rented, had not the listener already developed a theory.

"Well, Margaret," said a full-throated man's voice, as transmitted by the dictagraph, "this is not so bad. I never dreamed that you had the housewifely instincts that would make it possible for you to arrange with your own hands the dainty dinners we are having. I am beginning to think that the man is lucky who cannot afford servants."

"And don't you know," said a woman's voice, "I never enjoyed anything more in my life. For almost the only time I can remember I have a definite occupation. I have to provide our creature comforts. I haven't been so happy in years. I really don't care how long they keep us cooped up."

"I will confess," said the man, "that the novelty has worn off of the view into the courtyard. But it might be worse. For a while they had me thinking quite regularly of striped suits and the lockstep which are part of a life even more confining than this. And here I have you. I am quite content to wait for the atmosphere to clear."

"But I am very sure we are still being watched," said the woman. "I always feel that I am being followed when I go out."

"Very likely," said the man. "But no detective will pursue fruitless quests indefinitely. Even though they know you are here, they will ultimately lose interest in a surveillance that yields nothing. We can afford to wait. The time will come when we can steal away in safety."