 A 
                NEW KIND OF ALIEN TERROR
A 
                NEW KIND OF ALIEN TERROR 
              Earth is under attack! Alien beings bent on our destruction have 
                seeded the world with horrible machines capable of transforming 
                our planet into a hellhole where only they can live. 
              
Our only hope is a small group of intrepid adventurers who just 
                might be able to unravel the mystery of the alien machinery and 
                turn it against these deadly enemies. Their opportunity is a four-dimensional 
                maze, an alien thing that is part building, part machine, and 
                part psychological torture chamber. The House of Doors taps the 
                minds of its captives and creates worlds based on their worst 
                nightmares. 
              
Jack Turnbull, once a secret service "minder," now a recovering 
                alcoholic, finds the House of Doors alcoholic temptation beyond 
                imagination. 
              
Angela Denholm discovers that she hasn't quite forgotten her 
                brutal ex-husband, Rod, after all. Bureaucrat George Waite is 
                confronted by a planet-sized, living cancer that literally grows 
                from his own brain. 
              
Fred Stannersly, a military pilot who prides himself on his sense 
                of direction, creates a world where there is no direction, no 
                up or down, no left or right. 
              
For Spencer Gill, whose native understanding of machinery borders 
                on the supernatural, the House of Doors is doubly dangerous. Not 
                only is its alien technology almost too perverse for him to even 
                begin to understand, it creates for Gill a world of useless machines 
                that threaten his sanity. 
              
Once before, Spencer, Angela, and Jack survived the House of 
                Doors. Then the defeated aliens abandoned their plans to take 
                over the Earth. This time, if Spencer Gill and his comrades cannot 
                uncover the traitor in their midst, solve the maze of the House 
                of Doors, take over its master computer, and use the aliens' own 
                technology against them, our planet is doomed.