The Eleventh Commandment

Years after his Uncle Charles (Dick Sargent) cruelly and unjustly has him committed to a mental asylum, Robert Knight (Bernard White) manages to escape and immediately tracks Charles down at an upcoming family reunion. Along the way, Robert makes a detour to abduct his cousin (Lauren Woodland). After sharing a meal and conversation, the two set off to the reunion, where Robert plans to dispense gory vengeance.