Whenever a movie can thrive in a one room setting and purely rely on the dynamic between the people, it's a win. The acting is Oscar worthy from all but the story is so powerful and painful. I feel like Columbine was the inspiration due to similarities. We often forget that the "monsters" were human and that their families are human. You felt the pain and sympathy for all of them. It's easy to feel for the parents of the victims but imagine losing a child but your child was the killer. You have to mourn them and their actions, suffer alone, be hated, etc. Right up there with We need to talk about Kevin.