"Are you sure?"
"Of course. Look!" and he pointed to where they were missing from the small trunk in which Frank kept them.
"This is getting serious," declared Bart. "Something is wrong with Frank. I wonder where he could have gone?"
"What's that over there?" asked Fenn, pointing to a white object at the foot of a tree.
"It's a newspaper," said Ned, picking it up. "And it is turned to display an advertisement. I wonder if Frank could have gone to answer this?" and he read the item concerning the sanitarium.
CHAPTER XXII
FRANK IS EMPLOYED
It was about seven o'clock that evening when Frank, wearing the smoked glasses, rang the bell at the front door of the Cliffside Sanitarium. He had hurried through the woods as fast as he could, munching on the way a sandwich he had made before leaving camp.
His ring was answered by a woman with iron-gray hair who inquired what he wanted. When he said he had come in answer to the advertisement, he was shown into a little room opening from the main hall, and told to wait until Dr. Hardman came.
"Guess the place is still open, or they wouldn't ask me in," thought Frank.
He had not been in the little room three minutes before he heard voices out in the hall. One was that of the woman who had admitted him. At the sound of the other he started.