I had the privilege to have read the prequel before I had any knowledge of the Cain Casey series. When I began 'The Devil Inside' I already was familiar with some the characters, which softened the blow of my feelings towards Emma Verde, and my feelings towards Cain's younger sister, Marie, was just all the more precious because we got to know her in the prequel.
I already knew who and what Cain Casey was and the kind of business she did just from reading the prequel, but in this story we got to see a more, if not different, angles and sides to Cain's personality and temperament. She has continued to show us how much of a badass she really is in all her "crime boss" ways. I loved how calm and reserved she always remained whenever she was faced with a challenge or someone who had gone rogue and decided to go against the wrath of Cain Casey and her family. Don't f*** with Cain Casey's family and don't f*** with Cain Casey. In this story we learned that Cain had been abandoned by her wife, Emma, years before, due to the fact that Emma assumed the worst of her wife without giving Cain a chance to explain. With Emma's heavy decision made, she lost out on a life with their son and her wife. Cain raised their son to the best of her ability and at times I wondered if the author hadn't been around 11 year-olds very much, because Hayden spoke and acted more like a young adult than a kid inching towards puberty. But then I would ask myself if maybe his mature outlook on life had anything to do with the kind of mother he had, and I would nod in agreement that the young boys behaviour would be the norm. Especially raised surrounded by security guards, guns, crime lords, and the police. Emma herself, had a secret, or I should say, secrets, that she withheld from Cain and figured she could use one very precious secret to re-enter Cain's and Hayden's life without a problem, four years later. A part of me sympathized with Emma for previously running scared, and you can thank the prequel for softening my heart towards her, but the other part, the part that saw a naïve, stupid woman jumping to conclusions, felt nothing but anger towards her. If she hadn't had that innocent soul with her, I'd'a jumped in the book and told Cain to run and never look back. The romantic in me, though, wanted to see a happy reunion for the little mob family, and we started to see it, but then bad guys and the such, kind of ruined it. Can't give anything away.
Ali Vali did a brilliant job at piecing parts of this book into the prequel, because I remembered those scenes from the prequel. She also did an amazing job at pissing me off at times because I thought she was hanging us, the readers, out to dry without so much as an explanation, but then I'd flip to the next page or chapter and everything would flawlessly come together and my heart, mind, and rage would settle down. It's been a while since I read a book with very little romance or erotica that kept me wanting more, needing to read the next chapter, begging to know what would happen next. I most certainly plan on continuing with this series.