Chapter 11

_By Murray Leinster_

Seven 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."

[Sidenote: More and more South Americans are stricken with the horrible "murder madness" that lies in The Master's fearful poison. And Bell is their one last hope as he fights to stem the swiftly rising tide of a continent's utter enslavement.]

Charley Bell of the "Trade"--a secret service organization which 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 it 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.

Ribiera kidnaps Paula Canalejas, daughter of a Brazilian cabinet minister who, on becoming a victim, has killed himself, preferring death to "murder madness." Bell rescues Paula, and they flee from Ribiera in a plane. They find The Master's hidden jungle stronghold, and Bell destroys it with a bomb attack from the air. As he is getting away his motor quits. Paula jumps for her life, and shortly afterwards Bell follows, drifting straight down towards his enemies below.