William “Billy” Friedkin’s documentary about exorcism, The Devil and Father Amorth, which has him witnessing first-hand the work of the Vatican’s in-house exorcist, was acquired by LD Entertainment who will work with ICM Partners to enter into partnerships to distribute the film worldwide, reveals Deadline.

Friedkin, of course, directed the screen adaptation of William Peter Blatty’s The Exorcist in 1973 which had moviegoers lining up around the block to see it. The documentary looks at how the exorcism in the movie compares to a real exorcism. The film’s title comes from the filmmaker’s ability to attend Father Gabiele Amorth’s ninth exorcism — it took place with an Italian woman who had been experiencing behavioral changes and “fits” that could not be explained by psychiatry; they became worse during Christian holidays.

Known as the “Dean of exorcists,” Father Amorth (who just turned 92) has performed thousands of these rituals to rid evil from the human body. On the Italian woman, Father Amorth and the demon inside the woman began conversing in Latin, a language that the woman did not know.

“This film really shook me to the core,” Liddell told the site. “It made me wonder if this is possible, demonic possessions.”

LD and Friedkin previously worked together on the 2011 indie film Killer Joe which was based on the Pultizer Prize-winning play from Tracy Letts and starred Matthew McConaughey.