“You know?” she gasped. “How?”

 

I smiled.

 

“By a perfectly logical process. If Miss Marvell has had warning letters——”

 

“Miss Marvell? She has been here?”

 

“She has just left. As I was saying, if she, as the holder of one of the twin

diamonds, has received a mysterious series of warnings, you, as the holder of

the other stone, must necessarily have done the same. You see how simple it is?

I am right, then, you have received these strange communications also?”

 

For a moment she hesitated, as though in doubt whether to trust me or not, then

she bowed her head in assent with a little smile.

 

“That is so,” she acknowledged.

 

“Were yours, too, left by hand—by a Chinaman?”

 

“No, they came by post; but, tell me, has Miss Marvell undergone the same

experience, then?”

 

I recounted to her the events of the morning. She listened attentively.