In this second instalment of the Seeds of Time trilogy the intrepid Croans visit a future Earth, and in the process turn the lives of Andrew Conway and his wife Maria upside down. Added to the mix is the impact on his brother Julian and sister Dorothea of two lost children, and the impact of dangerous, charming Karl on Julian's daughter. And then, overshadowing all, is the comet. "Earthlight" takes the reader on a roller coaster from comedy to existential threat, with just about everything else in between.