The summary of this book describes it as a conclusion, however, this is not accurate as the series does continue past book 2.
In this installment, the bonds between Dillon and Holly as well as Cassy and Ryan continue to strengthen along two separate story lines. As expected, Cole becomes a bigger threat and is still eager to exact vengeance upon Dillon and Holly in spite of the devastation caused by the EMP.
This was great second addition to the series which sets up the third book well.