The Keys to the Kingdom is a fantasy adventure series for readers aged 11+, written by the award-winning, New York Times bestselling author of The Old Kingdom series, Garth Nix.
Arthur Penhaligon is a twelve-year-old boy with a huge responsibility: he's been chosen to travel through a mysterious, magical world called the House to fulfil the will left behind from an Architect. Throughout each book, he must face one of the seven 'Trustees' that do not want the Architect's will to come to fruition, and they're willing to do ANYTHING to stop Arthur.
If you are a reader who loves complex fantasy worlds, multiple antagonists and a quest trope, this is the series you'll want to read.
For more books like this, do be sure to take a look at our Best Magical and Fantasy Series for 11 and 12 year olds blog post.