Interesting sequel (or rather second book in a series). It didn't continue directly from what happened in the first book. By that, I mean the dynamics between the lead couple are "shook up" with this book.
Backing up. Eden was possessed by a demon named Darrak after she witnessed the death of his previous host, a serial killer. Because she's "a little bit psychic", she is one of the few hosts that can hear Darrak, and during the daytime, he can manifest a physical form, as long as they stay in close proximity.
At the end of the first book, Eden had become a black witch, like the black witch who originally cursed Darrak. So, while she genuinely was beginning to like Darrak, she had two big downsides above and beyond absolutely no privacy. (1) While she has all of this great power, she can't use it without slowly turning her soul black. And, (2) with every other host, Darrak has drained them till he killed them. And, they see no reason to believe that Eden will fare any differently.
Possible mild spoilers....
In this book, they've started their quest to find someone to break the curse and separate them, as the witch that cursed him was killed in the first book. But on their way to finding a contact, they bump in to Theo, Darrak's former demonic best friend, who hasn't had centuries of close contact with humans to humanize him.
Darrak finds himself torn. Theo thinks that once Darrak is returned to his former glory, he will regain his former mental view on life. So Darrak is unsure whether to accept his new "good guy" persona, or if he should try to be aloof, or even cruel.
So, while the first book was mainly about getting over Eden's fear and seeing them adjust to each other, this book has a lot of strife as Darrak PMS-es while he decides if he wants to be a good guy or a bad guy.
By the way, Darrak and Theo are archdemons. Created by Lucifer originally as succubus-es, before being promoted to be exclusive guards to Lucifer. They are -- or rather Darrak was and Theo still is -- big bads.
On the other hand, we find out that Eden's father was an angel, making her a nephilim. Talk about a mis-matched pair. But there is good news in that; it might be that Eden's angelic half will keep Darrak from draining her to death.
Good read. I'll still say this is urban fantasy, rather than paranormal romance, but it looks to be the type with a monogamous couple throughout. Similar to Eileen Wilks' "World of the Lupi" series.