PART TWO OF A FOUR-PART NOVEL
By Murray Leinster
Bell, of the secret "Trade," strikes into the South American jungle to find the hidden stronghold of The Master—the unknown monster whose diabolical poison swiftly and surely is enslaving the whole continent.
even United States Secret Service men have disappeared in South America. Another is found—a screaming homicidal maniac. It is rumored that they are victims of a diabolical poison which produces "murder madness."
Charley Bell, of the "Trade"—a secret service organization that does not officially exist—discovers that a sinister system of slavery is flourishing in South America, headed by a mysterious man known only as The Master. This slavery is accomplished by means of a poison which causes its victims to experience a horrible writhing of the hands, followed by a madness to do murder, two weeks after the poison is taken.
The victims get relief only with an antidote supplied through Ribiera, The Master's Chief Deputy; but in the antidote there is more of the poison which again in two weeks will take effect. And so it is that a person who once receives the poison is forever enslaved.
Bell learns that Ribiera has kidnapped Paula Canalejas, daughter of a Brazilian cabinet minister—himself a victim—who has killed himself on feeling the "murder madness," caused by the poison, coming over him. Bell corners Ribiera in his home, buries the muzzles of two six-guns in his stomach, and demands that he set Paula free.