I was very surprised by this book. I had requested it to review because the setup sounded good but as I started reading it I was quickly pulled into the story. It has been a while since I read a police procedural and I loved this one. 
It was written in two POV on two different timelines. The timelines were easy to keep track of with no confusion as to which time you were in. The countdown timeline for Shay's story really kept you engaged as you were waiting for what was going to happen! 
I liked both female MC but felt I was able to get to know Shay easier and feel more connected with her. Raisa was a bit more less developed but I haven't read the first book (which I didn't know existed until I had started reading this one and I didn't want to stop). Raisa's specialty as a linguistic professional at the FBI was intriguing and I really wish there had been more to the story about this. 
The complex story was easy to follow for me. The many characters helped in keeping "whodunit" secret until the very end, although I was keeping track of hints and thought I had it all figured out. I was wrong! 
This was well written and excellent storyline and a great ending all tied up without being rushed but not dragging either. I would recommend this book for sure. It could be one of my top 5 favourites of the year!

Thanks to Netgalley and Thomas & Mercer for the opportunity to read this and to discover a new to me favourite author!