That whole New Years scene was just wonderful! I gasped when Harry punched Draco and then giggled with all the reactions.
The relationship between Al and Harry and Scorpius and Draco was just great, too, and I loved the regular police detective work with a magical twist. And the scene in the car was nice and hot! Oh and one of my favorite moments had to have been when Harry drove off to get away from Draco and Draco Apparated right into his passenger seat! Brilliant so like Draco.