The Stone Boy(1984)

In one fatal moment he stood alone. His silence so loud it was deafening.

12-year-old Arnold Hillerman and his 17-year-old brother Eugene live with their family on a farm in Montana. In an accident, Eugene is killed by Arnold's gun. Isolated from emotions he cannot comprehend, Arnold now has to come to terms with his grieving family - including his father, mother, hostile uncle, and grandfather - while his family has to come to terms with Arnold.