When a peaceful lawyer takes a baseball bat to his wife then kills himself, Carl suspects that a cult leader the man prosecuted is responsible, and has the ability to influence others into unwittingly killing their loved ones. It soon becomes clear that Perri, whose story helped put the man in prison, is his next target.

The FBI and a pompous reporter believe a copycat killer is responsible for a series of murders identical to those of a dead bio-terrorist who claimed that he could kill people with hellfire, but Kolchak suspects that the murders have a supernatural explanation.