In the remote town of Mompox, Colombia, a mysterious man, known only as El Apredido, "The Learned One," is producing the Devil's Breath, a genetically altered drug that puts its victims in hypnotic states and robs them of their free will and their memory. It has been described by some to have the potential of being the most dangerous drug of all time. Jesuit priest Jack Bennis goes to Mompox at the request of the woman he loves to stop this drug,...