Frailty (2001)

A man comes clean to an FBI agent after his brothers suicide about how his late father went on a killing spree because he was told by God to kill demons.

This is a creepy movie and I give it a 4.5 out of 5.

Starring the late Bill Paxton [1955-2017] (Titanic, Apollo 13, Aliens, Edge of Tomorrow) as Dad Meiks, Matthew McConaughey (Interstellar, The Wolf of Wall Street, Dallas Buyers Club, Mud) as Adam Meiks, the late Powers Boothe [1948-2017] (Sin City, The Avengers, Tombstone, Agents of S.H.I.E.L.D.) as FBI Agent Wesley Doyle, Matt O'Leary (Brick, Time Lapse, Live Free or Die Hard, Threesome) as Young Fenton, Jeremy Sumpter (Peter Pan, Friday Night Lights, Soul Surfer, The Culling) as Young Adam, the late Luke Askew [1932-2012] (Cool Hand Luke, Easy Rider, The Greatest Game Ever Played, Big Love) as Sheriff Smalls, Levi Kreis (Better Half, House Not Home, Kiss the Bride, War Room) as Fenton Meiks, Derk Cheetwood (General Hospital, U-571, The Postman, The Last Ship) as Agent Griffin Hull, Missy Crider (Mulholland Drive, Powder, Gigli, Threading) as Becky Meiks, Alan Davidson (Rounders, In Hell, 13, The Grasslands) as Brad White, Cynthia Ettinger (The Silence of the Lambs, Thirteen, Deep Impact, Problem of Evil) as Cynthia Harbridge, Vincent Chase (Traveller, 29th Street, Black Scorpion, Blooming Dahlia) as Edward March, Gwen McGee (Coach Carter, Do the Right Thing, Bulletproof, Days of Our Lives) as Operator, Edmond Scott Ratliff (Spider-Man 2, Mr. & Mrs. Smith, Terminator 3: Rise of the Machines, Gone in Sixty Seconds) as The Angel and Rebecca Tilney (Killing Reagan, Nashville, Rectify, South Dakota) as Teacher.