The DG novel was partly based on the Doctor Who story where there were six copies of the Mona Lisa, and the bad guy wanted to go back to primitive Earth before

The DG novel was partly based on the Doctor Who story where there were six copies of the Mona Lisa, and the bad guy wanted to go back to primitive Earth before multicellular life. "The atmosphere is poisonous. I'm not sure what's in it but it would certainly get your carpets nice and clean."