"The Exorcist".

1. In the video, in the middle of the night, the sound of a ball being slapped came from the other end of the dark corridor. Chrissy and her daughter stood at the bright end of the hallway. The ball rolled over, Chris passed the ball over, and the dark end passed the ball back. Chris passed it, and the invisible person on the other end passed it again.

2. "The Exorcist" is a horror film directed by William Friedkin. It was released in the United States on December 26, 1973. The film was adapted from the horror novel of the same name by screenwriter William Pitt Blatty. , mainly tells the story of the demon Pazuzu possessing the body of the little girl Regan, controlling her spirit and transforming her into a monster. In desperation, Regan's mother Chris asked Father Karas for help and performed an exorcism ceremony for Regan. In the end, Father Karas died with the devil in order to save Regan.