Our only hope is to solve the puzzle of a four-dimensional maze, an alien thing that is part building, part machine, and part psychological torture chamber. A few brave men and women -- and one fearless dog -- dare to enter the maze. What they find there will change their lives forever, as the alien machinery creates terrifying worlds based on their worst nightmares.

"Lumley wields a pen with the deft skill of a surgeon, drawing just enough blood to titillate without offending."
   THE PHOENIX GAZETTE

"Fun on a heroic SF level."
   KIRKUS REVIEWS