```
"Mr. Holmes, may I have a word?"
In the spacious corridor, the voice that sounded beside him interrupted Holmes's action of pushing the door open.
An old man with grizzled hair, a hooked nose, and dressed in a suit and leather shoes stood between two medieval knight armors, leaning on a cane, and smiling amiably at Holmes.
"You are...." Holmes pretended to show a look of perplexity.
"James Morea, an active professor of mathematics at Oxford University."
The old man extended his hand to Holmes and shook it politely: "You really are forgetful, aren't you? Just two days ago you were investigating me, right?"
In response to James Morea's blatantly confrontational question, Holmes smiled and said, "I'm a detective, investigation is my duty."
"Who commissioned you to investigate me?"
"If you're asking about an employer, I'm afraid I must disappoint you." Holmes said, "No one commissioned me to investigate you, Professor Morea."
