Matthew Sandoval 39 Clues

>The whole 39 clues is about two kids Amy and Dan, when one day

Their grandmother Grace Cahill passes away. Then Amy and Dan find out what their family has really been apart of. The 39 Clues takes place around the world from Boston to London,

My favorite book from the 39 clues series is book 10, Into the Gantlet because I would have to say that this book had the most action, suspense , and some secrets revealed about their family.

Book 10 takes place in London, UK.  The branches are Ekaterina, Lucian, Tomas   , and the Janus, out of Amy and Dan’s family. They compete against each other even though if they are all family.