"Agents from all four branches of the Cahill family have been following Amy and Dan around the world. Their spies tracked the siblings to Venice, but it seems as if someone else got there first. Who is that mysterious figure watching Amy and Dan? Is he another Cahill, or something altogether more dangerous...?"
A world map showing the locations of all of Dan and Amy's near-death experiences in Books 1 and 2.
Preceded by: Card 416: The Bookworm
Followed by: Card 418: The Clue Fetcher