Others behind them took it up.
"Spies! Spies!" a hundred voices rang out.
The crowd surged in about them.
Hal gave one quick look about, and then said quietly to Chester:
"We are in for it now, old man. We'll have to make a break for it."
"All right," said Chester grimly. "Lead the way."
Once more the Italian officer stretched forth a detaining hand, but this time Hal wasted no time in explanation. He struck out straight from the shoulder, and the officer toppled to the ground.
"Second fall for him to-day," muttered Hal between his teeth.
He felt Chester's arm press his elbow.
"Come on," he said.