A former tennis player named Wilton, portrayed by Jonathan Rhys Meyers, finds employment instructing affluent individuals at an exclusive London club, including Tom (Matthew Goode) and his sister Chloe (Emily Mortimer), whom he eventually marries. He adjusts to her lifestyle but doesn’t seem genuinely fond of her. Things become more complicated when he encounters Nola, a rising actress played by Scarlett Johansson—who previously dated Tom—and they begin an affair. Faced with a wife eager to have children and a mistress whose behavior is escalating, Wilton feels compelled to take drastic action. It's puzzling why Woody Allen chose Meyers for the part; his performance lacks energy, making even Victor Mature appear lively. However, this shortcoming is somewhat offset by Johansson’s and Mortimer’s commendable performances. Johansson effectively depicts her character's transformation from an independent person into someone consumed with worry as the plot unfolds, and Mortimer portrays the intense emotions associated with wanting to become a mother. The film offers a glimpse into the lives of wealthy people’s children, avoiding a formulaic approach. Wilton’s parents, played by Brian Cox and Penelope Wilton, aren't typical indulgent figures; they expect him to earn his wealth, and she is particularly direct in her opinions. I appreciated the ending, even though it felt somewhat contrived, and found it ultimately satisfying. I still wonder why Nola didn't end up with Tom, though!

Source on TMDB