In 1931 on the northern border of Mexico begins one of the most lucrative businesses, bloodthirsty and corrupt in history: the United States, marked by the era of alcohol prohibition, is a powerful mafia heritage, while in ancient Mexico revolution fighters control the marijuana trade, opium and heroin. Benito Guadalupe Serrano, Villa's former colonel, dominates the business alongside his young godson, the gunman Raul Duval. They both tracks James O'Ball American drug agent. Joining them real characters appear as Maximino Avila Camacho Governor, President Miguel Alemán Valdés and gangster Lucky Luciano, Bugsy Siegel and Virginia Hill, infiltrated the highest levels of Mexican society. This novel, based on extensive research, conclusively reveals how drug prohibition was conceived, discussions about legalization during the regime of Lázaro Cárdenas, interests and secret agreements between the authorities of both countries, fierce wars the squares, complicity and treachery. Spring evil is a snapshot of the phenomenon of drugs between Mexico and the United States, 1931 to 1956. The real and raw story of a problem that has overflowed today, told in a thrilling epic.