You say that your fare told you that he was a detective?"
"Yes, he did."
"When did he say this?"
"When he left me."
"Did he say anything more?"
"He mentioned his name."
Holmes cast a swift glance of triumph at me.
"Oh, he mentioned his name, did he? That was imprudent. What was the name that he mentioned?"
“His name," said the cabman, "was Mr. Sherlock Holmes.