you finally left the room, did Mrs. Inglethorp bolt the door after you?”
“No, sir, not then, but I expect she did later. She usually did lock it at night. The door into the passage, that is.”
“Did you notice any candle grease on the floor when you did the room yesterday?”
“Candle grease? Oh, no, sir. Mrs. Inglethorp didn’t have a candle, only a reading-lamp.”
“Then, if there had been a large patch of candle grease on the floor, you think you would have been sure to have seen it?”
“Yes, sir,
a thing, until Bauerstein put it into his head. But, like all specialists, Bauerstein’s got a bee in his bonnet. Poisons are his hobby, so of course he sees them everywhere.”
I confess that I was surprised by Lawrence’s attitude. He was so seldom vehement about anything.
John hesitated.
“I can’t