From the first 39 Clues book I couldn't get enough of the series. I began reading it because the first book was by Rick Riordan, one of my favorite authors, but then I continued to read to ones after written by other authors. I ended up learning about new authors and reading their other books, like Gordon Korman. I recognized this book's author, Jude Law, because she wrote the fourth book in the 39 Clues series, Beyond the Grave. Hearing about this book, I was super happy that they were going to continue the series and that they even found a way to bring Amy and Dan back into the story. Double Cross Book 1: Mission Titanic, is about the new head of the Cahill family, Ian Kabra. For Ian, this has been what he's been working for his entire life. However, he underestimated exactly how much responsibility the job requires. And just how much his own family would betray him to get his position. At a Cahill family meeting a sinister force, calling himself the Outcast, kicks Ian out of his own house calling him to young and weak for such an important role. However, he offers Ian a series riddles to decode to regain his rightful spot. With each riddle, there is a disaster set to occur and its up to Ian to stop it. His first mission is to save a boat rigged to sink. Ian is forced to get past his ego and look to his younger allies in the Cahill family for help. The books brings back your favorite characters, as well as introducing new ones. For fans of the 39 Clues series, this is a must read!