Ben

Ben and Angela Baker had a complicated relationship, one kid and no money. Finally, one of their numerous fights had drove Ben out of the house, to eventually go flying off a road and be killed.
Charlie Baker didn't seem to take the death of his father too well as he started to have conversations with him out of the blue. Angela thought it was attachment issues, but as the conversations lead to real actions, she realizes Charlie has discovered something dangerous, that will soon overpower Charlie, and anybody who tries to stop it.