"Who's there?" he called sharply.
Jack set his mouth close to the keyhole.
"Dad," he whispered tensely. "It's Jack. Don't make a noise. I've come to rescue you."
There was a moment of silence, then the sound of rapid footsteps crossing the room.
"Jack?" Mr. Hampton also had stooped to the keyhole. "It can't be. Yet that voice! My boy, my boy. But how in the world did you come here?"
"Too long to tell, Dad," whispered Jack. "But have you the key to this door?"
"Key? No."
"Then," said Jack, despairingly, "it looks as if we were balked at the end. This door is too stout to break down without bringing the enemy on us. It's thick and bound with iron straps besides."
"Who is with you?"
"Bob. No. I mean Miss Calomares. She's helping me."