CHAPTER XXXI.
ROBERT DECIDES TO ACT.
To go back to Robert at the time he was watching the four men in the room on the ground floor of the sanitarium.
Our hero saw the certificate signed, and a little later saw Dr. Remington and his friend arise to depart.
He leaped from the fence and ran around to the front of the grounds, and was just in time to see Remington and his companion stalk off in the direction of the nearest street car.
At first he thought to have the pair arrested, but on second thought concluded to wait. He must first have positive proof that Mrs. Vernon had been brought to the place, and that these men were implicated in the plot against the lady.
"It's one thing to know a truth," thought Robert. "It's another thing to prove it. I must wait until I can prove what I suspect."
After the two men had gone the youth walked around to the rear of the institution once more.
Some trees hid the upper windows from view, and to get a better sight of these Robert climbed one of the trees to the very top.
From this point he could look into several apartments.