Forbidden outpost

Overview: A fan fiction novel and sequel to the movie Forbidden Planet. What happened after United Planets cruiser C57D departed Altair 4? Join Commander J. J. Adams, Altaira and Robby the Robot on the voyage home, a fateful detour and discovery of more secrets of the mysterious aliens known as the Krell. Why did the Krell withdraw from space? What knowledge of the Krell escaped destruction on Altair 4? The adventure begins where Forbidden Planet ends.