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.

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...