What a great read! This is the 6th book in the Red Stone Security series by Katie Reus, and although I haven't read the other books in the series yet, this totally stands on its own. Other characters from the series appear in this book, but you won't be lost at all if this is where you start. Which tells me that the other books are probably the same way. You can probably start with whatever one you feel like. And in a fun departure from other romantic suspense books, it's the heroine, Iris, who is the bad-ass agent hired to protect Wyatt, not the other way around. I thoroughly enjoyed this fun, fast read. This series is perfect for the reader who wants their romance dangerous and sexxxxy!