R. L LaFevers

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

Beastologist-in-training Nathaniel Fludd and his Aunt Phil nurse a mysteriously ill unicorn, try to stop Obediah from taking the unicorn's horn, and finally get a solid lead on the whereabouts of Nathaniel's parents

An intrepid girl must return a magical artifact to its rightful home in this archeological fantasy adventure for young readers. Eleven-year-old Theodosia Throckmorton is once again setting off for Egypt-this time to return an Emerald Tablet that contains some of the ancient world's most guarded secrets. Accompanied by her cat, Isis (smuggled along in a basket), Theo plans to return the artifact, then explore the mysteries surrounding her own birth...

Young Kenric is entrusted with three magic stones to help him in forging an alliance between the humans, the Fey, and the goblins, a task which turns out to be as difficult and dangerous as he fears