Trying to Summon a Demon
With World War II coming to an end, and unable to devote himself to the rocket research he was so passionate about, Parsons found solace in an increasingly occult form of magic – a combination of voodoo and witchcraft. Several OTO members felt like Parsons was using spells to summon a demon to kill Hubbard.

Source: Wikimedia Commons
In reality, he was trying to create a being to replace Betty… I don’t know which is more disturbing. His rituals usually involved pentagrams, obscure scripture, and masturbation, and would last longer than two hours while Prokofiev’s Second Violin Concerto casually played in the background. The strangest part: It just might have worked.