.

"I am investigating the circumstances which attended the death of
the late Sir Charles Baskerville," said he. "My friend here, Dr.
Watson, has informed me of what you have communicated, and also
of what you have withheld in connection with that matter."

"What have I withheld?" she asked defiantly.

"You have confessed that you asked Sir Charles to be at the gate
at ten o'clock. We know that that was the place and hour of his
death. You have withheld what the connection is between these
events."

"There is no connection."

"In that case the coincidence must indeed be an extraordinary
one. But I think that we shall succeed in establishing a
connection after all. I wish to be perfectly frank with you, Mrs.
Lyons. We regard this case as one of murder, and the evidence may
implicate not only your friend Mr. Stapleton, but his wife as
well."

The lady sprang from her chair.

"His wife!" she cried.

"The fact is no longer a secret. The person who has passed for
his sister is really his wife."

Mrs. Lyons had resumed her seat. Her hands were grasping the arms
of her chair, and I saw that the pink nails had turned white with
the pressure of her grip.

"His wife!" she said again. "His wife! He is not a married man."

Sherlock Holmes shrugged his shoulders.

"Prove it to me! Prove it to me! And if you can do so --!" The
fierce flash of her eyes said more than any words.

"I have come prepared to do so," said Holmes, drawing several
papers from his pocket. "Here is a photograph of the couple taken
in York four years ago. It is indorsed 'Mr. and Mrs. Vandeleur,'
but you will have no difficulty in recognizing him, and her also,
if you know her by sight. Here are three written descriptions by
trustworthy witnesses of Mr. and Mrs. Vandeleur, who at that time
kept St. Oliver's private school. Read them and see if you can
doubt the identity of these people."

She glanced at them, and then looked up at us with the set, rigid
face of a desperate woman.

"Mr. Holmes," she said, "this man had offered me marriage on
condition that I could get a divorce from my husband. He has lied
to me, the villain, in every conceivable way. Not one word of
truth has he ever told me. And why--why? I imagined that all was
for my own sake. But now I see that I was never anything but a
tool in his hands. Why should I preserve faith with him who never
kept any with me? Why should I try to shield him from the
consequences of his own wic