The film is beautifully shot in black and white. Just a pleasure to watch in that regard. In terms of the basic premise, you have a Polish married couple in a private vehicle. It's a nice car, but they're squished together on the car's front bench seat. Shoulder touching shoulder, without any extra room. It's not meant to be a small compact car, but you're definitely not going to fit a more than 4 people in this car. The hitchhiker is younger. Maybe he's supposed to be half the age of the couple. Why does he walk around and hitchhike? Boredom, perhaps, although maybe the couple is bored, too. If you're rich and bored, you go out boating. If you're poor and bored, you go out hitchhiking. For whatever reason, the man decides to let the younger man ride with them. Then, he invites him to join their one-day cruise. Why? Even his wife will eventually ask him why. Is the older man "showing off"? Does he want to make the young man jealous of his life ...
Briony (Saoirse Ronan) is a rather unlikable 13-year-old child. She's known Robbie (James McAvoy) her entire life. In fact, not that much earlier before the "events" of the film unfold, Robbie saved her life, and she told him that she would be "eternally grateful" to him. It seems she had a crush on him... but Robbie, of course didn't know that. She was too young, and he loved her older sister. Robbie was the family servant, but Briony's father liked him enough that he put him through Cambridge and was willing to continue putting him through medical school. Unfortunately, Briony walks in on Robbie and Ceilia (Keira Knightley) having sex in the library. Notice how the film repeats "shocking" events that Cecilia witnesses, at least between Robbie and Celicia. The first is when Cee strips to her underwear to jump into the fountain to retrieve a broken piece of porcelain. The second time is when she sees them in the library. Just prior to that mome...