Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.
"In an alternate ninth century, twelve-year-old Anya and a new friend face a Viking and a Tsar to protect the water dragon that saved her life, putting her family's home at risk"--Provided by publisher.
Twelve-year-old Elodie journeys to Two Castles in hopes of studying acting but instead becomes apprentice to a dragon, who teaches her to be observant and use reasoning, thus helping her to uncover who is poisoning the king.