A man of extraordinary dexterity might open the trap with a billiard cue, throw up a fine manila rope, climb up the rope and lie there on his stomach.
"No use," continued the Inspector.

"For the matter of that, look at this huge old-fashioned fireplace.

A man of extraordinary precocity could climb up the chimney.

Or this dumb-waiter on a pulley, for serving drinks, leading down into the maids' quarters.

A man of extreme indelicacy might ride up and down in it." "Stop a minute," said Kent.