“Surely, sir, you knew that there was a detective in the house?”
“My dear Israel, I knew nothing of the kind.”
He thought for a moment, and then added: “I think I ought to have been told.”
“I thought you knew, sir.”
“Are you sure it was a detective?”
“Quite sure.”
But even as I spoke I remembered that I only had my own deductions to guide me. No one had told me he was a detective. I searched swiftly in my brain for some excuse, but could think of none.
“How did you know he was a detective?”
“I heard him questioning one of the servants.”
“Which servant?”