Harry gears up for his destiny in brooding 'Deathly Hallows Part 1'
It's the wheeziest of clichés when critics write that each Harry Potter movie is darker than the last. Of course they are. The point of J. K. Rowling's seven-book fantasy series is to take her protagonists on the journey from childhood innocence through traumatic adolescence, and into the perils, responsibilities and consequences of adulthood. The metaphor for this interior journey is the kids' progress through the seven levels of school, which is in turn a metaphor for one's progress through life—which gets darker and more complex as you go along.
The interior journey of Harry and his friends is the heart of the books, along with the notion that choices made along the way can come back to haunt or reward you as life goes on.