The horror of the CIA's MK-ULTRA operations were hidden for a long time, but information has been released thanks to the Freedom of Information Act. The Central Intelligence Agency was responsible for horrible experiments on people using combinations of drugs that sometimes proved to be fatal. The document that I found can be found here, but the originally-released documents were discussed in the U.S. Senate in 1977. Up next, check out True Scary Story! Get in touch on our website, HorrorStory.com Listen ad-free and bonus content on ScaryPlus.com or join Scary FM's newsletter. Find Edwin on Instagram and Twitter at @edwincov or over at edwin.fm Produced by Cristina Lumague