and thought at Baker Street. Just before dinner, two telegrams
arrived, which at once broke two of the threads that Holmes had
been following.
One was from Baskerville & one from Cartwright.  Then the doorbell rang
and a rough-looking fellow entered, who introduced himself as John
Clayton the cabman, No.  2704. He had come himself, to find out what
we had against him, because he had driven his cab for seven
years and never a word of complaint.
Holmes said that he had half a sovereign for the man if he would tell
him about the fare who had watched Baker Street this morning and then
followed two gentlemen down Regent Street. Clayton was surprised and
embarassed by Holmes knowledge. His fare had told him he was a detective
and that he was to say nothing about him to anyone. He had hailed the
