Chase’s bitter reflections were at last disturbed by a sound that came sharply to his attention.  He was staring moodily into the night, his cigarette drooping dejectedly in his lips.  The noise came from directly below where he stood.  He peered over the stone railing.  The terrace was barely ten feet below him; a mass of bushes fringed the base of the wall, dark, thick, fragrant.  Some one was moving among these stubborn bushes; he could hear him plainly.  The next moment a dark figure shot out from the shadows and slunk off into night, followed by another and another and yet others, seven in all.  Chase’s mind refused to work quickly.  He stood as one petrified for a full minute, unable to at once grasp the meaning of the performance.

Then the truth suddenly dawned upon him.  The prisoners had escaped from the dungeon!

He dashed into the ballroom and shouted the alarm.  Confusion ensued.  He called out sharp commands as he rushed across to where Deppingham was chatting with the Princess.

“There’s been treachery,” he explained quickly.  “Some one has released the prisoners.  We must keep them from reaching the walls.  They will overpower our guards and open the gates to the enemy.  Britt, see that the searchlight is trained on the gates.  We must stop those fellows before it is too late.  Time enough to hunt for the traitor later on!”

Two minutes later, a swarm of armed men forsook the mock charity ball and sallied forth to engage in realities.  Firing was soon heard at the western gate, half a mile away.  Thither, the eager pursuers rushed.  The wide ray from the searchlight swung down upon this gate and revealed the forms of struggling men.

The prisoners had fallen suddenly upon the two Greeks who guarded the western gate, surprising them cleverly.  The Greeks fought for their lives, but were overwhelmed in plain view of the relief party which raced toward them.  Both fell under the clubbed guns of their adversaries.

Chase and Selim were not more than a hundred yards away when the desperate Greeks went down.  The blinding glare of the searchlight aided the pursuers, who kept outside its radius.  The fugitives, bewildered, confused by the bright glare in which they found themselves, faced the light boldly, five of them kneeling with guns raised to protect their two companions who started across the narrow strip which separated them from the massive gate.  Selim gave a shout and stopped suddenly, throwing his rifle to his shoulder.

“They have the keys!” he cried.  “Shoot!”

His rifle cracked a second later and one of the two men leaped into the air and fell like a log.  Chase understood the necessity for quick work and fired an instant later.  The second man fell in a heap, thirty feet from the gate.  His companions returned the fire at random in the direction from which the well-aimed shots had come.

“Under cover!” shouted Chase.  He and Selim dropped into the shrubbery in time to escape a withering fire from outside the gates.  The searchlight revealed a compact mass of men beyond the walls.  It was then that the insiders realised how near they had come to being surprised and destroyed.  A minute more, and the gates would have been opened to this merciless horde.