When ten-year-old orphan Peter Augustus Duchene encounters a fortune teller in the marketplace one day and she tells him that his sister, who is presumed dead, is in fact alive, he embarks on a remarkable series of adventures as he desperately tries to find her.
When China's leader declares war on sparrows in 1958, everyone makes loud noise in hopes of chasing the hungry birds from their land except for Ming-Li, a young girl whose compassion and foresight prevent a disaster.
Twelve-year-old Theo uses arcane knowledge and her own special talent when she encounters two secret societies, one sworn to protect the world from ancient Egyptian magic and one planning to harness it to bring chaos to the world, both of which want a valuable artifact stolen from the London museum for which her parents work.
When mummies go missing all over London, eleven-year-old Theodosia puts aside her fight against the Serpents of Chaos to save her father, who is suspected in the thefts, all the while avoiding a string of new governesses.
Eleven-year-old inventor Sol must recover his self-confidence if he and his eight-year-old sister, Connie, are to escape the clutches of Hansel and Gretel's witch, to whom they have been led by their new stepmother and the man they believe to be their father.
When eleven-year-old Theodosia and her cat, Isis, travel to Egypt to return the Orb of Ra and the Emerald Tablet, she hopes to learn more about her origins but finds, instead, the Serpents of Chaos and a precious treasure that suddenly appears and disappears.
Eleven-year-old Theodosia's ability to detect black magic raises her suspicions about a magician known as the Great Awi Bubu, while Henry, home for the spring holidays, discovers an artifact at the Museum of Legends and Antiquities that is coveted by every black-cloaked occultist in London.
Eleven-year-old Crow Darlingson has been dead for two years, forced to stay in the house with his overprotective mother except when he can sneak out, but new neighbor Melody Plympton offers a chance at friendship and, perhaps, getting his life back.