Magic or spycraft? In 1953, against the backdrop of the Cold War, the CIA initiated a top-secret program, code-named MKULTRA, to counter Soviet mind-control and interrogation techniques. Realizing that clandestine officers might need to...

Secret instructions written in invisible ink. Cigarettes that fire bullets. Covert communications slipped inside dead rats. Subminature cameras hidden in ballpoint pens. They are all real-life devices created by the CIA's Office of...