Dr. Lauren Wagner was a celebrity. She was involved with the most exciting adventure mankind had ever undertaken: a manned expedition to Mars. The whole world admired and respected her. But Lauren knew fear. Inside—voices entreating her to love them. Outside—the mystery of the missing group that had gone before her. The dead group. But were they simply dead? Or something else? A haunting and unforgettable blend of science fiction, fantasy, horror, and suspense from one of America's bestselling writers. A novel you won't soon forget.