The Mark of the DoveBy: Sydney Sanders After humankind was taken captive on their own planet by a powerful intruder, the world's fate rests on the shoulders of an unlikely squad. An ancient prophecy foretells the salvation of the world by six teens with mysterious abilities, unlike any the world has ever seen. Individually, each is impressive. As a unit, they are world-changing. Join Sadie and Chase in this action-packed tale of discovery and adventure, as they meet a variety of interesting creatures and people, making friends and enemies alike along the way.