Dr. Lauren Wagner was a celebrity. She was involved with the most exciting adventure mankind had ever undertaken. 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 terrifying novel of horror — and, surprisingly, of salvation — from one of America's bestselling writers.

A novel you won't forget.