Frailty

A young man, Fenton Meeks (Matthew McConaughey), approaches the lead FBI investigator, claiming he knows the identity of a serial killer who calls himself "God's Hands". The FBI agent is curious, but unimpressed until Fenton reveals that the killer is his younger brother Adam. Fenton recounts how his widowed father (Bill Paxton) awoke one day believing he had been visited by an angel and given a mission to destroy "demons" seemingly normal looking people, who walk this earth as pure evil. Fenton's father, and then his brother Adam, swore to carry out this "divine" mission. Believing Fenton's startling tale, the FBI agent follows Fenton to the family's rose garden only to be surprised that neither evil nor innocence are what they seem.