SPOILERS IN ADVANCE!
My explanation may not be the best because I haven’t read the novel and WONT be reading it. This is from what I’ve heard from other people. Basically they have three kids (two boys and one girl) and the two guys end up in a full on relationship (like incest incest). One is named Cyrus and the other Cecil. Cyrus is a major red flag and is essentially like his father. They saw their fathers having sex and that is when they begin to… explore. But yeah I guess the author thought the first novel wasn’t enough and had to run it back with an even crazier one.
I know that’s what fried me Like you can’t be fr but that’s a family of freaks I swear. I know the daughter found it disgusting or something like that, but idek if she is “normal.” But yeah the author was like, “You thought the first one was bad, well WATCH THIS SHIT.” And lo and behold she managed to make one more insane than the first one (assuming since I haven’t read either novel).

Their kid is involved in a forbidden relationship, and Edwin knows but doesn't care.