I bought this book not knowing it was part of a series. However this series is like the Jack Reacher Series where you can enter the series at any point and still enjoy the story. Mark has created a character that i enjoy to read, a kick ass take names character with lots of action. Since I have to do a lot of research for my job and read tech material alot, its nice to be able to just let loose and read for entertainment. After this book I grabbed books one and two in the series to start from the beginning and read them all.