Believing he is lost forever, Echo is shocked to find him half-frozen in the winter forest six months later, guarded by a strange talking wolf—the same creature who attacked her as a child. The wolf presents Echo with an ultimatum: If she lives with him for one year, he will ensure her father makes it home safely. But there is more to the wolf than Echo realizes.In his enchanted house beneath a mountain, each room must be sewn together to keep the home from unraveling, and something new and dark and strange lies behind every door. When centuries-old secrets unfold, Echo discovers a magical library full of books-turned-mirrors, and a young man named Hal who is trapped inside of them. As the year ticks by, the rooms begin to disappear, and Echo must solve the mystery of the wolf’s enchantment before her time is up, otherwise Echo, the wolf, and Hal will be lost forever.

    The two of them are close to creating the legendary Philosopher’s Stone—whose properties include immortality and can turn any metal into gold—but just when the promise of the Stone’s riches is in their grasp, Thea’s mother destroys the Stone in a sudden fit of violent madness.While combing through her mother’s notes, Thea learns that there’s a curse on the Stone that causes anyone who tries to make it to lose their sanity. With the threat of the French Revolution looming, Thea is sent to Oxford for her safety, to live with the father who doesn’t know she exists. But in Oxford, there are alchemists after the Stone who don’t believe Thea’s warning about the curse—instead, they’ll stop at nothing to steal Thea’s knowledge of how to create the Stone. But Thea can only run for so long, and soon she will have to choose: create the Stone and sacrifice her sanity, or let the people she loves die.

    Yet just as he is on the brink of a discovery, he keels over, nearly dead.Thorton's servant, Sybil, and his talking raven, Odo, are filled with dread: will they be thrown out into the streets to fend for themselves? Their only hope is to discover the alchemist's secret and learn to make gold. And according to their master's last garbled words, the secret has something to do with a green-eyed child, the mysterious Book Without Words, and three sweet-smelling stones in the foul muck at the bottom of a cauldron...From Avi, the 2003 Newbery Award-winning author of "Crispin: The Cross of Lead," comes the story of Thorston, an alchemist who works to concoct a potion that will enable him to live forever--and keep dying and rising from the dead as a result.

    But King Yama, the ruler of Diyu, is not willing to give Shang up easily. With the help of Shang's great lion guardian ShiShi, Mulan must traverse Diyu to find Shang's spirit, face harrowing obstacles, and leave by sunrise⁠—or become King Yama's prisoner forever. Moreover, Mulan is still disguised as the soldier called Ping, wrestling with the decision to reveal her true identity to her closest friend. Will Mulan be able to save Shang before it's too late? Will he ever be able to trust her again? Or will she lose him—and be lost in the Underworld⁠—forever?