War-Maker's Trail

Written by Evan Leigh

Copyright 1937

Published as one of the backup stories in Operator #5 - #33, May/June 1937.
"In some unknown spy nest Yamasina waited - to assassinate the President!"
"Yamasina, the master spy of the Yellowese Empire, had vanished. But the note he left behind invited Gregory Grex, Intelligence ace, to attend the assassination of the President..."