“The ‘lady cop’!” Florence sprang to her feet. She was looking at an old friend. Many of her most thrilling adventures had been encountered in the presence of this lady of the police.
“So it was you!” she exclaimed in a low whisper. “You are Jeanne’s lady in black?”
“I am the lady in black.”
“And she never recognized you?”
“I arranged it so she would not. She never saw my face. I have been a guardian of her trail on many an occasion.
“And now!” Her figure grew tense, like that of a springing tiger. “Now I am about to come to the end of a great mystery. You can help me. That is why I arranged that you should be here.”
“I?” Florence showed her astonishment.
“Sit down.”
The girl obeyed.
“Some weeks ago a priceless necklace was stolen from this very box. You recall that?”