What if your nightmares weren't really nightmares at all? We spend an average of 33 years of our lives asleep. But what really happens, and what are we capable of, when we sleep? Anna Ogilvy was a budding twenty-five-year-old writer with a bright future. Then, one night, she stabbed two people to death with no apparent motive-and hasn't woken up since. Dubbed "Sleeping Beauty" by the tabloids, Anna's condition is a rare psychosomatic disorder known...