"A motorist snaps a horrendous photo of a jetliner plunging from the sky. It's last day of full sanity. For John Cruz, the horror began the previous day when he awakened to find himself in unfamiliar surroundings. He learns that he's been in a mental hospital for nearly three years -- confined there for a crime he does not remember, a crime the hospital staff refuses to discuss with him. But then he discovers something even more bizarre. While he and other mental patients like him have been mysteriously recovering, the rest of the world has begun a descent into madness, thanks to a mysterious disease that causes many of its victims to go violently insane. Meanwhile, overhead a spectacular apparition splits the skies, as the largest comet in recorded history makes a close approach to the planet Earth. And some believe there's a connection."--Page 4 of cover.