I finished Artemis, which was a better than average read but still my least favorite of the three Andy Weir has written. (I'd rank them Project Hail Mary as best, then The Martian, then Artemis.) And now I've started a novel that turns out to be a sequel to a novel I haven't read before, but the first page seems to pretty much catch you up to speed. Apparently in the first novel, Breed, a rich family is having trouble having kids so they pay for an experimental treatment that does allow them to have kids (the wife gives birth to twins, a boy and a girl), but then they degenerate into savage beasts and are killed, the young children being separated and put into foster care. This second novel, Brood, by Chase Novak, is about the dead mother's sister getting custody of the twins, who are apparently afraid to eat because they don't want to hit puberty because that's when the monstrous genetic defect, if it was passed on to them, will strike, turning them into savage, bestial killers like their parents. So it seems like it might have been best had I read the first novel first, but so far I don't feel like I'm missing anything. If I enjoy this book (so far so good, several chapters in), I may try to hunt up the first in the series.
Johnathan