Here are his keys, which are the duplicates of Mr.Rucastle's." "You have done well indeed!" cried Holmes with enthusiasm.

"Now lead the way, and we shall soon see the end of this black business." We passed up the stair, unlocked the door, followed on down a passage, and found ourselves in front of the barricade which Miss Hunter had described.

Holmes cut the cord and removed the transverse bar.

Then he tried the various keys in the lock, but without success.

No sound came from within, and at the silence Holmes' face clouded over.
"I trust that we are not too late," said he.