Stewart appeared to agree. “I heard nothing. I told you I didn’t.”

The Sergeant thought for a moment. “How far away are your bedrooms?” he demanded.

“Mine is on the floor above this,” answered Charles Stewart. “Llewellyn’s is above that.”

“Where is your father’s?”

“Next to mine! The only other bedroom on that floor is used by Miss Lennox.”

“And the servants?”

“On the same floor as Llewellyn’s. On the other wing.”

“Thank you, Mr. Stewart. I don’t think I shall need Mr. Llewellyn any more for the present. Thank you, Mr. Llewellyn.”

The secretary bowed and thanked the Sergeant, not without a touch of irony.

Charles Stewart turned to him as he walked to the door.