Now, on the other side of this narrow wing runs the corridor from which these three rooms open.

There are windows in it, of course ?" "Yes, but very small ones.

Too narrow for anyone to pass through." "As you both locked your doors at night, your rooms were unapproachable from that side.

Now, would you have the kindness to go into your room and bar your shutters ?" Miss Stoner did so, and Holmes, after a careful examination through the open window, endeavoured in every way to force the shutter open, but without success.

There was no slit through which a knife could be passed to raise the bar.