king with
him--you are a detective--a spy, as he is. You pretend to be a
somnambulist in order to carry out your ends. I suspected you long ago.
Now I know. This man has robbed me of something that I am determined to
have. What he has done with it--where it is concealed, I do not know,
but I mean to have it--be sure of that. If you know--you had better
confess, if you have any regard for his welfare."

His words, his brutal manner, brought the tears to her eyes. She
realized that she had but to say a few words, to save Richard from she
knew not what fate, yet equally she knew that she could not say
them--that he would not want her to say them. In her agitation she took
a handkerchief from her dress and pressed it to her eyes.

The man Mayer had been regarding her in silence throughout the whole
scene. Suddenly he stepped forward and snatched the handkerchief from
her hand. His quick eyes had detected a monogram in one corner of the
bit of cambric, and with an air of triumph he held it beneath the light,
examining it closely.

Hartmann came to him. "What is it, Mayer?" he asked, eagerly.

His assistant extended the handkerchief to him. Grace realized with a
sinking heart that it was one of several she had herself embroidered
during the weeks preceding her marriage. With what pride, she reflected,
she had worked over the G and D, lovingly intertwined in one corner.
"His wife!" she heard Hartmann cry, with a harsh laugh. "That explains
everything. That was why he did not leave Brussels at once--he was
waiting for her--he would not go without her." He turned to Grace with a
new expression on his face. "So you are his wife, eh? Very well. Now we
shall see whether or not you will tell me what I want to know. Your
husband is confined in the room below us. This"--he indicated the small
black box with wires attached--"is a device which I have constructed for
producing certain light rays--light rays which have a marvelous power,
both for curing, and producing disease. Look!" He held his powerful hand
before her eyes. "This is what they did to me, before I discovered how
to control them." She saw, stretching across the back of his hand and
wrist, a broad red patch, like the scar remaining after a burn. "Now
come here." He seized her by the wrist and dragged her toward the
apparatus at the center of the room. "Look--in there." He indicated a
short brass tube which rose from the center of the box, resembling the
eyepiece of a mi