“Leatherface” (*1/2 out of four) was a thoroughly stale prequel to the “Texas Chainsaw Massacre” showing a teenaged Leatherface (Chris Adamson) and how he escaped from a mental hospital with a vengeful sherriff (Stephen Dorff) on his trail and was badly influenced by his deranged mother (Lili Taylor) to become a vicious, saw-wielding killer. Original “Chainsaw” writer Kim Henkel wrote this and this was executive produced by original director Tobe Hooper but enough already! Despite a few good gory deaths, it’s familiar and forgettable. Dorff actually looks older in the flashback scenes than he does in scenes set in the present day!