there was something in his masterly grasp of a situation, and his keen,
incisive reasoning, which made it a pleasure to me to study his system of
work, and to follow the quick, subtle methods by which he disentangled the
most inextricable mysteries. So accustomed was I to his invariable
success that the very possibility of his failing had ceased to enter into
my head.

It was close upon four before the door opened, and a drunken-looking
groom, ill-kempt and side-whiskered, with an inflamed face and
disreputable clothes, walked into the room. Accustomed as I was to my
friend's amazing powers in the use of disguises, I had to look three times
before I was certain that it was indeed he. With a nod he vanished into
the bedroom, whence he emerged in five minutes tweed-suited and
respectable, as of old. Putting his hands into his pockets, he stretched
out his legs in front of the fire, and laughed heartily for some minutes.

"Well, really!" he cried, and then he choked, and laughed again until he
was obliged to lie back, limp and helpless, in the chair.

"What is it?"

"It's quite too funny. I am sure you could never guess how I employed my
morning, or what I ended by doing."

"I can't imagine. I suppose that you have been watching the habits, and,
perhaps, the house, of Miss Irene Adler."

"Quite so, but the sequel was rather unusual. I will tell you, however. I
left the house a little after eight o'clock this morning in the character
of a groom out of work. There is a wonderful sympathy and freemasonry