Frailty movie review & film summary (2002)
Heaven protect us from people who believe they can impose their will on us in this world because of what they think they know about the next. "Frailty" is about such a man, a kind and gentle father who is visited by an angel who assigns him to murder demons in human form. We are reminded that Andrea Yates believed she was possessed by Satan and could save her children by drowning them. "Frailty" is as chilling: The father enlists his two sons, who are about 7 and 10, to join him in the murders of victims he brings home.
Source: rogerebert.com