Before you read this book, please be aware that it's a sequel! I went into the book not knowing that, but with all the subtext and hints to a previous story concerning The Priest, I asked Winter if there was indeed a book prior to Born To Die and there is! Atonement! I'm kind of interested to read it, as well, because Nicola sounds so, so interesting. She certainly seems to have a story to tell (well, it's been told to be fair). However you can read this as a stand-alone, I just think there's a better reading experience for you if you read Atonement first, because you'll be able to understand a bit more (I assume) why Cassy is the way she is.
Born To Die was a great read. Cassy and Boyce were such intriguing characters, clearly both characters who had been hurt at some point in their past, but I liked their chemistry. I liked how they put aside whatever went on in Atonement and worked together (kind of) to try and solve the murders and robberies featured in Born To Die.
I whizzed through Born To Die. It was a really decent crime read, and I liked getting to know all of the characters, and the plot was intriguing - I was dying to know who was behind it all, and why. It had great characters, a great plot and the story skipped along at a really great pace. I really enjoyed the book, and I can't wait to go back and read Atonement and fill in any missing gaps!