by Robert Heinlein
Del Rey Paperback ISBN/ITEM#: 0345493184
Date: 26 September, 2006 List Price $13.95 Amazon US / Amazon UK /
Book Description: Young Mars colonist Jim Marlowe leaves his home in South Colony to attend a school at the Martian equator, and brings along his round, furry Martian friend Willis. When the friendly creature is captured and held hostage by the militaristic headmaster, Jim and his buddy Frank mount a rescue operation to save Willis--and stumble upon a terrible secret that threatens the survival of the Red Planet colonies.
(Source: Del Rey)