BOOK 4 in the Wallace of the Secret Service series
Sir Leonard Wallace, the famous chief of the Secret Service, finds that
the peace of Europe is threatened by a gang engaged in the theft and
sale of national secrets. Wallace gets busy, and is assisted by the gang
leader's own fear of him and his anxiety to get the Englishman into his
power.
Wallace's investigations, his startling discoveries and his escapes from
death make this one of the most exciting books ever written by Alexander
Wilson.