"This road will eventually lead across the Greek border," the girl whispered as they walked along.
"Here's hoping we get across the border before the Bulgarians get after us," said Chester.
"Second that motion," declared Hal.
They walked on in silence.
It had been more than an hour now since they had left their late prison and Hal was beginning to hope their absence would not be noticed before morning. He had just said as much to Chester.
"I am afraid that is too much to hope for," was the latter's reply.
And, as it turned out, it was.
The party had walked possibly five miles, when, from behind, they heard the sudden booming of a great gun.
"Faster," said Hal, and broke into a trot. The others followed suit.
"Suppose they have discovered our flight, or the gun was some other signal?" said Chester.