Shocker

Plot

A serial killer is on the loose in a Los Angeles suburb, and a television repairman with a pronounced limp named Horace Pinker (Mitch Pileggi) becomes the prime suspect. When the investigating detective,Lt. Don Parker (Michael Murphy), gets too close, Pinker murders Parker's wife, foster daughter, and foster son. However, his other foster son Jonathan (Peter Berg) develops a strange connection to Pinker through his dreams and leads Parker to Pinker's rundown shop. In a shootout in which several officers are killed, Pinker manages to escape. He targets Jonathan's girlfriend Allison (Camille Cooper) in retribution.

Another dream leads Lt. Parker and the police to Pinker, who is in the midst of a kidnapping. This time, just as Pinker is about to kill Jonathan, he is arrested. Pinker is quickly convicted and sentenced to die in the electric chair.

Prior to his execution, Pinker reveals that Jonathan is, in fact, his son, and that as a boy, Jonathan had shot him in the knee while trying to stop the murder of his mother. But what they do not realize is that Pinker has made a "deal with the devil". When he is executed, he does not actually die but instead becomes pure electricity, and is able to possess others (it is unknown if the possessed hosts live or die after Pinker leaves their body since some of them were shown to be lying motionless after being released) to continue his murderous ways. He soon possesses Lt. Don Parker. Parker uses his strength to fight off Pinker, who escapes into a T.V. dish. Jonathan and his friends try to find a way to fight him.

Eventually, Jonathan, with the aid of Alison's "spirit", devises a scheme to bring Pinker back into the real world and accidentally discovers that Pinker, as with all energy sources, is bound by the laws of the real world and uses this limitation to defeat him. Pinker threatens Jonathan that he will find a way out of his "prison". The film ends when Alison's voice tells Jonathan to take care of himself, while Jonathan's neighborhood suffers a blackout.