On The Night Train boards a married woman who lured a new employee into an affair. She has a high-moral reputation but no one at the Christian publishing company where she is a supervisor knows of her hunger for younger men. After she has gotten what she wants she lies to the head of the company about how the young man has been calling her on the phone making inappropriate remarks. The young man is fired believing that the woman loves him and that it has all been a big misunderstanding. She is taking the night train home when a stranger sits beside her, the lover of the young man who has come for revenge.