A Cahill from the past calling himself The Outcast recreates the conditions for the Titanic disaster and challenges Ian Kabra to stop him. Ian's only chance to beat the Outcast is to track down his former allies, Amy and Dan. But finding Amy and Dan will demand from Ian an impossible sacrifice.

Ordered by the Vespers to find a legendary map that has been missing for nearly a century, Amy and Dan travel through Europe to the Czech Republic, where they confront extreme circumstances that reveal an ultimate Vesper threat.

A clue takes Amy and Dan Cahill to Egypt, where they investigate the origins of the rivalry between the Tomas and Ekaterina branches of their family and try to figure out if they can trust a message from their dead grandmother Grace.

March and Jules are teenage twins, following in their father's footsteps as jewel thieves, but when their latest job goes wrong they end up with one jewel, a sapphire called the Morning Star, one of three cursed jewels--and the only way they can break the curse is to elude the FBI, Interpol, and a gang of international criminals, find the other two jewels, and reunite them.