_Revelations of Methods and Daring Adventures_
_Told by Secret Service Men of Several Countries_
It is estimated that more than a hundred thousand spies and agents
have been in the service of the various countries during the War.
Several thousand have been captured and several hundred have been
executed. The German spy system in the United States alone was a
powerful organization at the beginning of the war. But the American
Secret Service, one of the greatest organizations of its kind in
existence, thwarted their plots, interned them in large numbers,
and drove such men as Boy-Ed and von Papen from our shores. The
interception of the Zimmerman note to Mexico, the revelations of
the Swedish duplicity in Argentine, the discovery of Bolo, the
French financier, the plots in India--and hundreds of others have
been exposed by the genius of the United Secret Service. Most of
these stories cannot be told until long after the War, but a few of
them, gathered from American and European sources, are told here.