If you like Riordan’s books, National Treasure, or the Da Vinci code, you will love this series. I could barely put Book 1 down from start to finish over two days. Historical fact and fiction are woven together. Did Copernicus construct a time machine, then scatter the parts across the globe?
Two stepbrothers and two girls who are friends are swept into an adventure to find twelve relics hidden around the world and protected by the Guardians. The evil Order of Teutonic Knights are hot on their trail, with seemingly infinite resources. Kidnapping, mysterious deadly accidents, car chases, including a Maserati, are all at play.
Critical thinking and puzzle solving skills come into play. Targeted and efficient research on the internet helps them to stay one step ahead of the bad guys, most of the time, as our team races through Berlin, Bologna, Rome, and across the island of Guam.