Wall of Mirrors

Psychic Eye Jack Stein has been taken against his will to the one place he never wanted to see again—the sprawling, self-replicating urban structure known as the Locality. The agents of Outreach Industries want the information in Jack’s head—information concerning alien technology far beyond human science.
 
Billie doesn’t want to be in the Locality any more than Jack does, but she knows how to navigate the programmed environment better than anyone—and will stop at nothing to find him.