The Red-Line trilogy is fabulous! I've just finished book 3 and am beyond words. It was touch and go there for a while, not sure if good or evil would win. J.T Bishop is a phenomenal author. I was hooked from page 1 of The Shift and I was not disappointed as I continued to read. In this final tale, everything is explained, and brought out into the open. You learn about motives, and secrets. You finally learn about "the crash" and how it all plays into Ramsey and Sarah's lives, as well as with Yates. What I loved most about this book was the connection I felt to the characters, mainly Sarah. I found her making less than stellar choices, and screaming at her to see the red flags. (She doesn't of course, at least not when I wanted her to). I found myself wanting nothing but the best for her, and that's definitely a side effect to the fabulous writing of J.T! I highly recommend these books to everyone. There are a few sex scenes, but they're mild and very minimal. It would be appropriate for anyone who knows about sex (so basically anyone from middle school age & up, these days).