In Good Night Mrs. Russell, the tension unfolds as a woman finds herself in a dire situation, held captive by a disturbed man named Henry, who has sinister intentions. The story begins with Mrs. Russell reflecting on her past interactions with Henry, the owner of a small cafe she frequented during her lunch breaks. Initially, Henry appears to be a polite and clean man, always serving her with a smile, but there are subtle hints of his underlying instability. As she recalls her visits to the cafe, she realizes that Henry's demeanor was often unsettling, particularly his lack of smiles and the way he seemed overly attentive to her every word.