Bandwidth - The Ghost of Devlin Mallard

Inspired to rediscover his roots and family history, computer programmer Michael, soon learns that the past is sometimes best left undisturbed: lurking in the history of his bloodline is a twisted killer, Devlin Mallard. A man dispatched from this earth in 1929 at the end of a hangman's noose. In the 21st Century, spirits have moved on from Ouija boards and séances. The dead now travel by broadband - hidden in the Bandwidth.
They inhabit the chat rooms, plying their trade online, ever hungry for contact with the living. Now freed from the darkness and roaming cyberspace, this ghost is hell-bent on exacting revenge and unleashing mayhem. Fighting for his life, and that of his family, Michael joins forces with murder investigator, Detective Sergeant Woods, and rides a roller-coaster of global killings to the final confrontation.
He must face his demon and return Devlin Mallard to the darkness.