baronet had run down the path, so that no track but the
man's was visible. On seeing him lying still the creature had
probably approached to sniff at him, but finding him dead had
turned away again. It was then that it left the print which was
actually observed by Dr. Mortimer. The hound was called off and
hurried away to its lair in the Grimpen Mire, and a mystery was
left which puzzled the authorities, alarmed the country-side, and
finally brought the case within the scope of our observation.

"So much for the death of Sir Charles Baskerville. You perceive
the devilish cunning of it, for really it would be almost
impossible to make a case against the real murderer. His only
accomplice was one who could never give him away, and the
grotesque, inconceivable nature of the device only served to make
it more effective. Both of the women concerned in the case, Mrs.
Stapleton and Mrs. Laura Lyons, were left with a strong suspicion
against Stapleton. Mrs. Stapleton knew that he had designs upon
the old man, and also of the existence of the hound. Mrs. Lyons
knew neither of these things, but had been impressed by the death
occurring at the time of an uncancelled appointment which was
only known to him. However, both of them were under his
influence, and he had nothing to fear from them. The first half
of his task was successfully accomplished but the more difficult
still remained.

"It is possible that Stapleton did not know of the existence of
an heir in Canada. In any case he would very soon learn it from
his friend Dr. Mortimer, and he was told by the latter all
details about the arrival of Henry Baskerville. Stapleton's first
idea was that this young stranger from Canada might possibly be
done to death in London without coming down to Devonshire at all.
He distrusted his wife ever since she had refused to help him in
laying a trap for the old man, and he dared not leave her long
out of his sight for fear he should lose his influence over her.
It was for this reason that he took her to London with him. They
lodged, I find, at the Mexborough Private Hotel, in Craven
Street, which was actually one of those called upon by my agent
in search of evidence. Here he kept his wife imprisoned in her
room while he, disguised in a beard, followed Dr. Mortimer to
Baker Street and afterwards to the station and to the
Northumberland Hotel. His wife had some inkling of his plans; but
she had such a fear of her husband--a fear founded