He tried to follow the flashes of the light, hoping to read the message if it was in Morse code. But he soon found that it was not. And then Henri cried out sharply.
"If it's a signal, it's being answered from over there!" he said. "See, there's a light waving there. It looks as if it might be from the roof of a house. I—"
CHAPTER XVI
A DARING EXPLOIT
Frank leaped out.
"Turn the car around first," he said. Henri obeyed. "Now try your starter. Cut out the motor and then see if she starts quickly."
Henri, mystified, obeyed.
"Why?" he asked.
"Because when we want to start, we may have to do it in an awful hurry," said Frank. He searched the road for a moment. "Run her back a few feet to where that big tree is. It's darker there than anywhere else around here. All right, that's far enough. We'll have to take the chance of something coming along while we're gone and bumping into her but I don't believe there's much risk of that. Now, come on! And quiet! We've got to get up to that place without being seen."