The documentary films and movies listed below are helpful for understanding the Battle of Good Versus Evil. Additional films will be added over time.
Recommended Documentaries:

Hostage to the Devil, Director Marty Stalker, 2016,
available on YouTube and Google Play Movies & TV, Documentary

The Devil & Father Amorth, Director William Friedkin, 2017,
available on Amazon Prime Video and Google Play Movies & TV, Documentary

Return of the Exorcists, Director Declan McCormack, 2015,
available on Amazon Prime Video, Documentary

The Sons of Sam: A Descent Into Darkness, Director Joshua Zeman, 2021, available on Netflix, Documentary
Recommended Movies:

Deliver Us From Evil, Director Scott Derrickson, 2014,
available on Amazon Prime Video

The Rite, Director Mikael Håfström, 2011,
available on Amazon Prime Video, YouTube, and Google Play Movies