"In itself not a very damaging circumstance. It might be explained. You have questioned him on his movements?"
"In two interviews," replied the inspector, puffing his cigar leisurely and watching the smoke curl as though it were the most fascinating study in the world just then.
"Account not satisfactory?"
"He has none to give." (Puff.)
"What does he mean by that?"
"Memory a blank between 3:30 and 7:30." (Puff.)
"Up to some mischief, then."
"A curiously opportune lapse," said the inspector, his eye twinkling humorously. "So much for circumstances after the fact. And now for opportunity."
"Of course the evidence for opportunity will depend upon the inmates of the house. You are convinced of Bertha's candor?"
"On my reputation as an adept in mendacity. You have not found me overcredulous, as a rule?"