is telling the truth. I thought it was the envelope
you gave me earlier in the evening--it was unaddressed and the red seal
was the same."

"Just a moment," interrupted Kent. "What did you do with the envelope?"

"When I returned home I dropped it inside one of the Venetian caskets,"
Mrs. Brewster replied. "No one ever went near them, and I thought
it would be safe there. You see, I was puzzled to know how it had
disappeared from the desk in the reception room, where I had left it in
one of the pigeon holes, intending to take it later to my room."

"I took the envelope--your envelope--out of the desk," confessed
McIntyre. "I would have spoken of it, Margaret, but was hurt that you
had left our marriage certificate lying around so carelessly."

"Your what?" Barbara sprang up, astounded.

"Our marriage certificate," repeated McIntyre firmly. "Margaret and I
were married last week in Baltimore. We would have told you, Helen,
but your peculiar conduct and Barbara's, so angered me that I forbade
Margaret to take you into our confidence."

"Father!" Barbara got no further, for Helen had risen. She spoke with
quiet dignity.

"You forget, father, that since Monday night we have thought you a
forger and, worse, a murderer," her voice faltered. "In our effort to
guard you we have become estranged. Margaret"--she held out her hand
with an affectionate gesture and with a sob her step-mother kissed her.

"How did this envelope get back inside our safe?" asked Kent a moment
later, picking it up and displaying the red seal, intact save for the
broken corner.

"I went downstairs about midnight or a little later and into the
library," confessed Helen. "What was my surprise and terror to see
Grimes holding the envelope. To me it meant father's exposure as a
forger. I had a revolver in my hand and struck before I thought. Then
I must temporarily have lost my reason. It was only my thought to save
father that lent me courage and strength to thrust Grimes inside the
casket where Babs and I used to hide. I then returned to my room,
and was just coming downstairs again after secreting the envelope, to
release Grimes and get medical assistance if need be, when Margaret's
screams aroused the household."

McIntyre interrupted his daughter with a hasty gesture, and addressed
his wife. "When Detective Ferguson questioned me as to your reason for
being in the library, Margaret, I stated you had gone down to get a
book left lying on the