"Genetic Soldier" (1994) shared the timeline of "The Destiny Makers". Subsequent to the events of that novel, the crew of a starship sent to explore for habitable planets, return to find themselves at odds with the inhabitants of the Earth, who have evolved in a more ecologically harmonious direction in their absence, and ostracise them for their incompatibility with a society determined by rigid genetic specialisation. The novel drew some inspiration from Turner's short story "Shut The Door When You Go Out" which dealt with a similar scenario .