Secret Operative K-13 — Joel Townsley Rogers

The Fate of Thousands Rests in the Hands of One Man -- Deep Behind Enemy Lines.

In the tradition of The Thirty-Nine Steps and other harrowing tales of espionage comes this thrilling novel of a spy working behind enemy lines during the Great War.

Who is K-13? No one knows. And can he be stopped?

Lift off with the dawn patrol and fly the skies over the killing fields of France to find out the exciting answers in Secret Operative K-13!

First Time in Book Form.