The Treasure of the Bermuda Triangle #6

The fabulous, jet-setting adventures continue in this ongoing mystery series about a hip and headstrong girl detective who travels the globe and always saves the day in style.
 
A priceless Mayan calendar made of solid gold has gone missing in one of the most mysterious places on Earth. Now Agatha and her cousin Dash have to contend with something bigger than a greedy and dangerous criminal—a daring new mystery that sends them to the heart of the Bermuda Triangle.