The Scotland Yard inspector was still writing in the parlour when Holmes interrupted him.

“I understood that you were writing a report of this case,” said he.

“So I am.”

“Don’t you think it may be a little premature? I can’t help thinking that your evidence is not complete.”

Lestrade knew my friend too well to disregard his words. He laid down his pen and looked curiously at him.

“What do you mean, Mr. Holmes?”

“Only that there is an important witness whom you have not seen.”

“Can you produce him?”

“I think I can.”