Spies Ltd.
Written by
G. H. Teed
Copyright 1935
First published in Detective Weekly #108, March 16, 1935. Collected in .
"Somewhere in London was the man whose criminal genius threatened the safety of millions. Britain's Secret Service knew it, and yet were helpless to track him down, powerless to smash his staggering plot-until a dead man yielded the vital clue that led them step by perilous step to the heart of that ruthless organisation known as-Spies Ltd."