Chapter 13 THE FIGHT IN THE PASSAGE.

A form pressed Jack closely from behind.

"Careful!" said a low voice that the lad recognized with a start.

Jack half wheeled and muttered:

"Frank! What--"

"Sh-h-h," was Frank's response, for it was really he, and added quickly: "When the light goes out, duck and make for the door. I'll be behind you."

Jack said nothing, but awaited d