Filmmaker Amy Berg recounts a harrowing story of child abuse and how a serial child molester went free for the better part of two decades in this documentary. Oliver O'Grady was a Catholic priest who served in a number of parishes in Southern California during the 1970s and '80s.

O'Grady was also a habitual child molester who abused dozens of youngsters who were entrusted to his care, and while his superiors in the church were aware of O'Grady's crimes as early as 1973, they opted to simply move him from one congregation to another rather than turn him in to authorities or strip him of his ordination.

In Deliver Us From Evil, a number of O'Grady's victims and their families discuss his crimes and the repercussions they feel to this day. O'Grady himself also appears in the film, speaking candidly about his career as a sexual predator and recounting his misdeeds in detail. (After finally being convicted of child sexual abuse, O'Grady served time in prison and now lives in Ireland, where he is still looked after by Catholic clergy.)

Berg also offers a look into the history of the Catholic Church and how its leadership has often protected those within the hierarchy at the expense of their worshipers. Deliver Us From Evil was named Best Documentary Feature at the 2006 Los Angeles Film Festival.