Radix reviews the case of Dr. Karla Turner a skeptic and "alien abduction" researcher who most likely was part of the expanded and updated MK Ultra programs. We do not know if there was demonic, or even interdimensional creatures involved. Whatever it was, she was killed for her research. I think she got too close to the truth and that, had she lived she would have found that truth. 

R.I.P. Dr. Karla Turner