"Yes, sir, that was the gentleman's name."
"Excellent! Tell me where you picked him up and all that occurred."
"He hailed me at half-past nine in Trafalgar Square.
He said that he was a detective, and he offered me two guineas if I would do exactly what he wanted all day and ask no questions.
I was glad enough to agree.
First we drove down to the Northumberland Hotel and waited there until two gentlemen came out and took a cab from the rank.
We followed their cab until it pulled up somewhere near here."
"This very door," said Holmes.
"Well, I couldn't be sure of that, but I dare say my fare knew all about it. We pulled up halfway down the street and waited an hour and a half. Then the two gentlemen passed us, walking, and we followed down Baker Street and along-"
"I know," said Holmes.