Gnawbone (2016)

A boy witnesses something take the life of his grandfather. Thinking that the traumatic event created a false memory (most think it was an animal or bear attack), a psychologist wants the now-21-yea- old young man to face his fears by trekking into the woods. With the help of friends, he might be able to process these memories and come to terms with that scared little boy. Or is that memory actually the truth?