Per the book... a statement by Julia, the satanist priestess.
““I was the cult’s main breeder,” she said. “I could get pregnant easily, which gave me a special status in the group.
We had someone who could perform abortions, a physician’s assistant, I think, a repulsive guy. We used fetuses for ceremonies.
Daniel(head of the cult) encouraged it and said he and Satan would honor and reward me greatly for this ‘service’ and be eternally grateful for my role.”
Father A., the head exorcist priest and Jaques, the priest friend of the psychiatrist were giving Julia a ride home when....
“Father Jacques had previously instructed me how evil spirits can affect our own senses and material reality, which makes it difficult, if not impossible, to tell the difference at times between what’s real and what isn’t.
Because both he and Father Jacques saw the same things, Father A. believed the spirits were altering material reality at that point and reflected their ability to assume, visibly, various shapes when appearing to humans. “They appeared, seemingly, in front of the windshield—fleeting, wavy, dark things,” he said.
As Father A. started to pull the car over, the headlights of the Chevy went dark, along with all the dashboard lights. Driving blind, Father A. veered the car into a small ditch, shaken, no doubt, but unhurt.”