Free from the author @
Amazon (amazingly not KDP Select exclusive-or-else, but it's being price-matched to somewhere I can't see from Canada):
Perfect People by novelist, film director (you may have seen his alien abduction drama
Fire in the Sky, and he also directs episodes of Canadian TV shows such as
Arctic Air and
Republic of Doyle, by the way), long-time Cornell University Faculty of Physics member, etc. etc. Robert H. Lieberman (
ISFDB,
IMDB,
Wikipedia), some kind of post-apocalyptic genetically perfected dystopian adventure involving a futuristic detective living in an underground city, originally out from Dell in 1986.
Best-selling novelist and award-winning film director Robert H. Lieberman takes us to Creatoria— the city below Earth’s devastated surface.
In the eight generations since the last and final war, humankind has moved closer— thanks to genetic engineering— to perfection in every way. That was what Detective Creally Leemling had been taught, even though he was only a Nearly Perfect. And he believed it— until he witnessed things no Perfect could imagine still existed.
A mystery on earth’s surface leads this futuristic detective to a mind-shattering discovery, a beautiful young woman and a desperate plan to escape perfection… and survive.