A high-stakes treasure hunt through our world . . . and the one beyond.Estranged twin brothers Logan and Landon Flint couldn't be more different. Logan—a daredevil Casanova—lives for the rush, while Landon—a brilliant but reserved archaeology professor—clings to the safety of academia. The only thing they share is the shadow of their late father, a legendary and controversial treasure hunter who died with his greatest mystery still unsolved.When Landon's lif...