Alright, so I've seen a lot of discourse around this, and I think people are right to flag 'Haunting Adeline' as needing some serious, upfront warnings. It's not your typical dark romance where the edges are just a bit gritty. The entire core relationship is built on a stalker dynamic, and it's presented in a way that's meant to be alluring, which can be a major trigger if you're not braced for it. The power imbalance is extreme from the get-go, with Zade's surveillance and manipulation. If you have any history with being controlled or watched without consent, that could hit really hard, even if the narrative frames it as protective.
Then you've got the explicit non-consensual elements that go beyond the initial stalking. There are scenes of physical restraint and sexual violence that aren't glossed over. The book uses dub-con in a very intense, unflinching way. I'd also add graphic violence as a big one—Zade's actions outside the relationship are brutally violent, and those descriptions are detailed. The emotional manipulation is constant, weaving through everything. Honestly, the list is long: stalking, kidnapping, graphic violence, sexual assault, psychological manipulation, and probably trauma responses depicted in a way that could be retraumatizing. It's a book that demands you go in with your eyes wide open, because the darkness isn't a subplot; it's the entire foundation.