Dr. Jerrold Post, Professor Emeritus of Psychiatry, Political Psychology and Internal Affairs at George Washington University, and a former psychological profiler for the CIA. (National Geographic/Nick Holt)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
South Korean National Police Chief, right, questions North Korean commando Kim Shin-Jo, 27, at a police station in Seoul, Jan. 22, 1968, after he was captured in a gun fight, following the unsuccessful Blue House Raid.( AP / Rex / Shutterstock)
Former undercover FBI agent Bob Hamer, who was instrumental in cracking North Korea's counterfeit 'supernotes' operation. (National Geographic/Matthew Plaxco)