Dive into this gripping tale by Frederik Pohl that delves into the realms of cybernetic robots and implanted personalities, challenging our perceptions of reality. What if that wall you see is not quite what it seems? Who are we beneath the surface? Meet Guy Burckhardt, who awakens from a nightmarish vision filled with explosions, fire, and choking gas. Was it merely a dream, or is there something more sinister at play? Unravel the mystery in this inventive and chilling narrative that will keep you on the edge of your seat. (summary by Phil Chenevert)