Garth Nix

"Erdas is a land of balance. A rare link, the spirit animal bond, bridges the human and animal worlds. Conor, Abeke, Meilin, and Rollan each have this gift-and the grave responsibility that comes with it. But the Conquerors are trying to destroy this balance. They're swallowing whole cities in their rush for power-including Meilin's home. Fed up with waiting and ready to fight, Meilin has set off into enemy territory with her spirit animal, a panda...

Arthur Penhaligon is supposed to die at a young age, but is saved by a key that is shaped like the minute hand of a clock. The key causes bizarre creatures to come from another realm, bringing with them a plague. A man named Mister Monday will stop at nothing to get the key back. Arthur goes to a mysterious house that only he can see, so that he can learn the truth about himself and the key.

As Arthur Penhaligon seeks to find the seventh key, complete his quest to save the Kingdom to which he is heir, and learn his true identity, he discovers that he has a greater purpose than he could have imagined.

Even as he grows stronger and closer to discovering the secret of his identity, Arthur must face further dangers and conflicts as he struggles to attain the Sixth Key from the powerful Saturday.

Young Arthur Penhaligon must weigh an offer from Lady Friday that is either a cunning trap for the Rightful Heir or a golden opportunity that he must seize.

Twins Jaide and Jack Shield discover that their father and grandmother are "wardens," tasked with defending portals and humanity from evil, but their lives change forever when they learn that they share the same powers.

The adventure continues in this third book in the New York Times bestselling series. Erdas is a land of balance. A rare link, the spirit animal bond, bridges the human and animal worlds. Conor, Abeke, Meilin, and Rollan each have this gift-and the grave responsibility that comes with it.But the Conquerors are trying to destroy this balance. They're swallowing whole cities in their rush for power-including Meilin's home. Fed up with waiting and ready...

Tal and Milla struggle to find the Codex in spite of opposition from hostile creatures.

Tal, a Chosen of the Orange Order, has fallen into an unknown world of warriors, iceships, and magic while trying to steal a powerful sunstone to save his family, and joins with Milla, a violent icecarl, in an effort to get back to his home in the now hostile castle.

Tal and Milla are only one step from death and evil is only one step from triumph. An old war is revived and the key to everything is the Seventh Tower.