Nadia loves fun facts. Here are a few about her: She collects bobbleheads -- she has 77 so far; She moved from Egypt to America when she was six years old; The hippo amulet she wears is ancient... as in it's literally from ancient Egypt; She's going to win the contest to design a new exhibit at the local museum. Because how cool would that be?! (Okay, so that last one isn't a fact just yet, but Nadia has plans to make it one.) But then a new kid shows...

Nicolas Calva has Caesar's magic bulla, the Malice of Mars, and he has hidden the dangerous Jupiter Stone, but he still has to find a way to defeat The Mistress, a dragon who contains the soul of the vestalis Atroxia, and who hates Rome, and save his mother and friends, and maybe even the Empire itself--and he is troubled by his sneaking sympathy for Atroxia, who was unjustly condemned.

Horace F. Andrews, armed with a strange wooden box, and Chloe Burke, wearing a mysterious dragonfly pendant, become entangled in a secret and ancient society striving to protect powerful devices from the evil Riven.

When Nic, a slave in the mines outside of Rome, is forced to enter a sealed cavern containing lost treasures of Julius Caesar, he finds himself in possession of an ancient amulet filled with magic once reserved for the Gods, and becomes the center of a conspiracy to overthrow the emperor and destroy Rome.

Sofia discovers that princess Elena is actually imprisoned in Sofia's mysterious amulet and has been waiting for another princess to set her free.

When he discovers a century-old amulet from the Philippines that's supposed to bring good luck, Freddie couldn't be more wrong and has thirteen days to break a curse or meet an untimely demise.