"If you do he'll be a dead animal in about two seconds," answered Brossom.

Robert ran up to the third floor of the house, and speedily found Mrs. Vernon's room.

Luckily the key to the door was on a nearby peg, and he quickly took it down and let himself into the apartment.

The lady was waiting for him, and almost threw herself into his sturdy arms.

"Robert!" she cried. "Oh, what a friend you have proved to be!"

Mr. Farley followed our hero, and then came the doctor and the detective.

Dr. Rushwood felt that the game was indeed up, and to save himself insisted that he had been imposed upon.

"I told the other doctors that Mrs. Vernon did not act like a very crazy person," he said. "But they assured me that she was in the habit of having violent spells."

Robert assisted Mrs. Vernon down to the lower floor and then a servant was called upon to unlock the gate leading to the road.

The hack was in waiting, and without listening to any more Dr. Rushwood might have to say, the party got in and were driven directly for Mrs. Vernon's mansion.