The Zone Call
Written by
W. E. Johns
Copyright 1932
9th of 17 stories in . It was republished as Secret Orders in The Modern Boy #265, Mar. 4, 1933.
After Biggles forces a German pilot to land and the British gets the man drunk, the prisoner reveals the location of a new airfield. Preparations are made to make a surprise attack on it but Biggles suspects a rat.