"Now it's up to you. Remember, I've got my gun ready and at the first false move I'll put a bullet through you."
The captain in command of the cavalry squadron gave a sharp command and his men drew rein while the officer came forward. He glanced at the colonel in the automobile and saluted.
"Oh, it's you, sir," he said. "Have you seen anything of the fugitives?"
The Bulgarian felt the pressure of Hal's revolver in his back.
"No," he said.
The captain saluted and would have passed on, but Hal instructed his prisoner to ask:
"How far are we from the Greek frontier?"
"Less than a mile," was the answer. "There is but one more body of our troops between here and a strong force of Greeks, which is patrolling the border."
The two Bulgarians saluted each other and the troop separated to make a path for the automobile.
"Another close shave for all of us," said Chester, when they had passed by. "You, too," he said to the Bulgarian. "You'd have been a goner if you had sought to give the alarm."