The time has come at last for Elspeth Gordie to leave the Land on her quest to find and stop the computermachine Sentinel from unleashing the deadly Balance of Terror arsenal. But before she can embark on her quest, she must find a lost key; and although she has long prepared for this day, nothing is as she imagined. This is the final, dramatic volume in series of books that undoubtedly shines as one of the most fantastic, and fantastical, tapestries ever woven.