He returned in a few minutes.
"Yes, sir, it is the key of Mrs.Croyle's room." He laid it upon the table and went out of the room.
"I suppose it is then," said Harry Luttrell.

"But I am a little puzzled." "Oh ?" "It wasn't lying beneath Mrs.Croyle's window as one might have expected.

But at the east side of the house, below the corridor, and almost in front of the glass door of the library." Both of his hearers were disturbed.

Sir Chichester took up the key, and twisted it this way and that, till it flashed like a point of fire in the sunlight; as though under such giddy work it would yield up its secret for the sake of peace.

He flung it on the table again, where it rattled and lay still.
"I can't make head or tail of it," Sir Chichester cried.