Deadly Karma (2011)

A group of high school teens shake the life of a socially different peer named "Sammy" (Jordon Hodges) at school, driving him deeper and deeper into his mental state. Sammy eventually snaps, but none of the gang sees the ripple of the quake until five years later. With a final showdown between what is and what isn't and a struggle between life and death. Whatever you do in life will sometimes kill you.