
FOREWORD
CHAPTER I
CHAPTER II
CHAPTER III
CHAPTER IV
CHAPTER V
CHAPTER VI
CHAPTER VII
CHAPTER VIII
CHAPTER IX
A shadowy organization known only as the Frogs has long floated through society’s peripheral gossip, dismissed as eccentric harmlessness until a series of brutal attacks shatter that illusion. When prosperous hardware magnate James G. Bliss is savagely assaulted on his country estate, he can only whisper the word “frog” before slipping back into unconsciousness. The inexplicable violence spreads, targeting seemingly insignificant figures and igniting a wave of fear that forces ordinary citizens to arm themselves against an unseen menace.
Soon, journalists, investigators, and a few determined outsiders begin to pry into the Frogs’ murky rituals and hidden hierarchy, uncovering a network that may wield far more influence than its name suggests. As clues surface—cryptic references to a “left arm,” secret meetings in mist‑shrouded woods, and a past crime involving a massive heist—the mystery deepens, promising a tense chase through London’s foggy streets and the tangled world of clandestine power.
Language
en
Duration
~9 hours (552K characters)
Publisher of text edition
Project Gutenberg
Original publisher
United Kingdom: Ward, Lock & Co., Limited,1926.
Credits
Al Haines, Cindy Beyer & the online Distributed Proofreaders Canada team at http://www.pgdpcanada.net
Release date
2023-01-14
Rights
Public domain in the USA.

1875–1932
A newspaper reporter turned thriller powerhouse, he wrote at astonishing speed and became one of the most widely read British authors of the early 20th century. His stories helped shape modern crime and suspense fiction, with titles like The Four Just Men still remembered today.
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