Rio has spent years preparing to host the world during the Olympic games--but they didn't prepare for this... Rio de Janeiro, Brazil--home to beautiful white-sand beaches, gorgeous women, stunning natural beauty, and the world's largest Carnival celebration--knows how to throw a party. So it's a natural choice to host the biggest spectacles in sports--the World Cup and the Olympics. To ensure that the games go off without a hitch, the organizers...

It started with a kidnapping. A shadowy organization known only as the Vespers snatched seven members of the Cahill family and demanded a series of bizarre ransoms from around the world. Thirteen-year-old Dan Cahill and his older sister Amy began a global treasure hunt, determined to bring back whatever Vesper One needed, so long as it kept the hostages safe. But when they deliver the last ransom, Amy and Dan discover Vesper One's terrifying endgame....