/0/8506/coverbig.jpg?v=59892c884ad04f3ba45a911bb2260341)
Bentwood led the way from the dining-room up a back staircase, and paused before what looked like a portion of the wallpaper. There was a little discoloured spot about half way between the dado and the floor, and on this the doctor pressed a shaking thumb. A part of the wall fell away and disclosed a small room beyond. The room had evidently been o