Grim Tuesday
Arthur Penhaligon didn't think he would ever have to return to the very strange house that nearly killed him on Monday – the house that contains a fantastical and sinister realm inside.
But the next day brings new challenges – in the form of an enemy named Grim Tuesday, who threatens the safety of both Arthur's family and his world. Arthur must retrieve the Second Key from Grim Tuesday in order to save everything – an adventure that will force him to steal a Sunship, survive a very weird work camp, befriend a bearlike spirit, and fight the void Nithlings. And even after all that, he will still have to venture into the scary Far Reaches for an ultimate showdown.
The stakes are high. And time is ticking.
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Garth Nix
In Garth Nix’s worlds, the dead rarely stay quiet, magic obeys ancient and perilous rules, and courage often looks like a teenager holding a bell, a sword, and the weight of two realms. Best known for the Old Kingdom series, Nix has carved out a space in fantasy literature that hums with mythic resonance and emotional depth—where necromancers clash with free magic creatures and heroines face destiny with grit rather than grandeur.
Born in Melbourne, Australia, Nix grew up in Canberra, absorbing stories that blurred the line between the ordinary and the extraordinary. He worked in bookstores, publishing, and even the Australian Army Reserve before turning his attention fully to fiction. That eclectic journey quietly shaped his writing—there’s a sense in his stories that the fantastical doesn’t sit apart from reality, but seeps into it through forgotten doorways and ancient bloodlines.
The Keys to the Kingdom
The Keys to the Kingdom consists of seven books. The current recommended reading order for the series is provided below.

