Control over someone else's behavior is possible to achieve in hypnosis, making it an obvious option for interrogation. Could placing subjects under a trance help loosen their lips? This was one of the many questions about operating with hypnosis that the Central Intelligence Agency speculated and tested.

With this potential power to unlock the secrets of the mind, wrote Edward F. Deshere in 1960, it is "surprising that nobody... seems to have used it in this way." He researched and talked to experts but found that no intelligence agency that would admit to being familiar with the use of hypnosis in interrogation.

Click below to find out about specific information about the CIA using hypnosis.