“And now it is a solid, blank wall?”
“Looks that way.”
Nick tapped against the place indicated.
“Brick!” was his decision.
“Brick!” exclaimed Abbott. “Why, the whole house is wood.”
“Not this part, surely. It is brick, covered with plaster, and neatly papered. Did Mackenzie buy any brick after he came here?”
“No. But I now remember he asked permission to remove a small outbuilding, and that was built of brick.”
“That is where he got them, then. Was there a corresponding closet on the other side?”
“Yes.”