Carlisle's findings, including his use of hypnosis to extract information out of his interviewees. — K.J.
Each episode contains recorded tapes of these interviews, which were presumed lost until Carlisle's family discovered them after his 2018 death. The series also provides commentary from modern-day experts to contextualize Dr. Carlisle's findings, including his use of hypnosis to extract information out of his interviewees. — K.J.