A deranged engineer, bent on revenge for the deaths of his wife and daughter, sets two passenger trains on a collision course, and con-man William Shatner puts his life on the line to ward off the crash.
Overprotective mother Liz Benedict meets 18-year-old orphan Joanna Redwine and hires her as house help and live-in companion to rambunctious daughter Tara. Liz's husband Jeff isn't too thrilled with the arrangement, and his fears soon prove justified when Joanna begins to manipulate everyone and to slowly destroy the family. Meanwhile, next-door neighbor Dr. Linquist investigates and discovers Joanna has a disturbing past.
A talk-radio host, who specializes in abusing and insulting his audience, gets a call from a disturbed teenage girl who says she is going to commit suicide. After first encouraging her, he has a change of heart and frantically tries to get his listeners to help find the girl before she makes good on her threat.
