Shocker (1989)
About to be electrocuted for a catalog of heinous crimes, the unrepentant Horace Pinker transforms into a terrifying energy source. Only young athlete Jonathan Parker, with an uncanny connection to him through bizarre dreams, can fight the powerful demon. psychopath, sadistic, detective, blackout, gore, murder, capital punishment, slasher, maniac, rage, killer, evil, madman, insane