Emily's and Narvin's mother is kidnapped and dragged into a strange and magical world where, it seems, the children's great-grandfather has been before. It's up to the children to set things right and save their mother's life.

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.

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.

Horace and his friends discover their talismans of power may be dying out. Now the race is on to save their way of life and the world as we know it.

"For centuries, the Keepers and the Wardens have been guarding the mysterious Mothergates, a source of incredible power. But now the Mothergates are dying, and Horace and his fellow Keepers know that the weakened gates may unleash a dangerous force that will consume the world--and destroy everyone in it. While their enemies are willing to take this careless risk, Horace and his friends are prepared to sacrifice themselves for the preservation of the...