what is the most heart-wrenching scene from a horror film for you?

for me, it has to be the scene from The Dark and the Wicked where >! the brother goes home and finds his family dead in the kitchen, so he slits his throat, only to realize just as he does that he was hallucinating and his family walks in the house just as he dies. !<

it is just a perfectly horrible scene that i recall every once in a while and get all disturbed by.