In the chaos following World War II, the US government faced many difficult decisions, including what to do with the Third Reich's scientific minds. These were the brains behind the Nazis' once-indomitable war machine. So began Operation Paperclip, a decades-long, covert project to bring Hitler's scientists and their families to the United States. Many of these men were accused of war crimes, and others had stood trial at Nuremberg; one was convicted of mass murder and slavery.

Until recently, historians believed America gave asylum only to key Nazi scientists after World War II, along with some less famous perpetrators who managed to sneak in and who eventually were exposed by Nazi hunters. But the truth is much worse, and has been covered up for decades: the CIA and FBI brought thousands of perpetrators to America as possible assets against their new Cold War enemies.

Since the early days of human warfare, which may date back to the Stone Age, combatants have sought to gain an advantage through the acquisition of secret information. With the growth of technology, a parallel advantage was sought through the application of numerous types of torture. In the 19th century, the concept of manipulation was added to military tactics, an attempt to influence the minds of assassins, double agents, and world leaders alike to act against their natures. 

During the occupation of Japan after WWII, the US had an important decision to make. Should they hold those responsible for atrocities during the war accountable or should they take the information to advance national interest? The researchers who worked at Unit 731, the biological and chemical warfare research and development unit, were given immunity in exchange for their research data. Unit 731 included factories filled with humans, tested with various diseases, as well as field tests on civilians of the Soviet Union and China.

The visionary chemist Sidney Gottlieb was the CIA’s master magician and gentlehearted torturer - the agency’s “poisoner in chief.” As head of the MK-ULTRA mind control project, he directed brutal experiments at secret prisons on three continents. He made pills, powders, and potions that could kill or maim without a trace - including some intended for Fidel Castro and other foreign leaders. He paid prostitutes to lure clients to CIA-run bordellos, where they were secretly dosed with mind-altering drugs. His experiments spread LSD across the United States.