The planet's only hope lies in the brilliant minds of a father and son, Cyrus and Leiden Hudder - minds singularly linked in the mission to save life on Earth, but separated by a lifetime of misunderstanding and resentment which culminated in Cyrus's disappearance in the early 1980s.
Used availability for Paul Preuss's Core
August 1993 : USA Hardback
January 2014 : USA Paperback
March 1996 : UK Paperback
August 1994 : USA Paperback
January 2014 : USA, Australia, Canada, UK Kindle edition