2017 is a big year for Harry Potter.
The series is officially no longer a teenager, with J.K. Rowling's magical saga turning 20-years-old this year. Furthermore, it marks 10 years since the books ended with The Deathly Hallows, and September 1 is the "19 Years Later" date mentioned at the end of that book.
Dreamed up on a train to London in 1990, honed over the next few years in various cafes and cities - most notably Edinburgh - The Philosopher's Stone was finally published in 1997, with an initial release of just 500 copies.
Little did anyone know then that it'd become a global phenomenon, a multi-billion dollar movie franchise, and the first in the biggest-selling book series of all-time (The Philosopher's Stone alone has sold over 100 million copies worldwide).
There is, however, a simple reason for that: the books are brilliant. Rowling is a genius storyteller, and built an incredible world that children and adults alike delight in spending time in.
All of the books in the series are good, but a few are truly great, and others have their drawbacks. That said, some of them do fare better than others. So as the series turns 20, and we reach 19 years later, it's a good time to see how they all stack up.