 Mr. Blake commutes to work by train and is followed by a Miss Dent who is obviously desperate to speak to him. She sits next to him on the train and threatens to kill him if he doesn t listen to her. She has been hospitalized for eight months after suffering a mental breakdown. It seems she once worked as his secretary but lived a very lonely life with few friends. After spending the night together however, Blake has her fired and she is clearly intent on revenge.