I'm actually speechless, like, wtf.
Let's start with the twins, Sage and Eden, the FMCs. They're polar opposites of each other, yet they become more and more twisted, until they're so similar.
Then we have Xane, one of the MMCs, who lives a double life; one with a wife and kids, and one with a secret boyfriend.
Finally, we have Ransom, the other MMC. He's depraved, insane, and honestly, disgusting. I loved him. He forces the twins and Xane into increasingly more unhinged trials, pushing them until they break.
I literally cannot say more without spoiling the entire story, but if you're squeamish, this is not for you. There's probably a hundred triggers on this book, so read at your own risk.
However, if you love the unhinged, psychotic ramblings of a mystery man, with layers upon layers of thrills and disgust, this IS for you. Welcome home.