The Calusari (The X-Files 1)

First Charlie's little brother is killed by an oncoming train.Then his father dies in a bizarre accident.Both times,Charlie is present- watching.Is it just an eerie coincidence?>Mulder and Scully don't think so.Neither does Charlie's grandmother.Believing that Charlie caused the horrors,she calls in the Calusari to cleanse his soul.But is Charlie truly evil?Or is there an even darker force at hand?