This book is the third in the author's Extreme Measures series, but definitely holds up as a stand-alone. I was hooked right from the start and didn't want to put the book down! The story itself is gripping, and the pace moves at breakneck speed, perfect for the genre (thriller/ suspense). The heroine, FBI Agent Grace Billingsley, and love interest Sam Monroe are both likeable characters who readers will root for. As with all Ms. Eason's books, there is a romance element and we learn about the Grace's and Sam's personal histories as they explore their relationship while working together to catch a serial killer. I really enjoyed the psychological aspects in this book, since Grace is a behavioral analyst and Sam is a psychiatrist. The romance balances perfectly with the gritter aspects of the story, and I always appreciate that Ms. Eason's books are clean - no over-the-top on-screen gore, cursing, or sex. This is a Christian book as well, with Grace and Sam talking about their faith, which I thought was very appropriate considering what they've each been through and their careers. Highly recommend!!