This is the 14th book in the Mitch Rapp series and the first since Vince Flynn died. Apparently, Flynn started the book and Kyle Mills finished it. I couldn't notice where he took over, so that's probably good.
It's been a while since I read Rapp. I enjoyed it. Gave it a 7- on the Haugenometer. B&N readers give it a more stellar 4.5 of 5.
Rapp reminds me a lot of Bob Lee Swagger, though John Sandford does a better job of developing a more realistic character in Swagger. In a fight between the two, my money is on Bob Lee.
Still, Mitch Rapp is great series and Mills looks up to the task in continuing it in fine fashion. Start it if you haven't.