It's not ... *bad*. It really isn't. It's just a bit shocking after the other two. It doesn't match. It *does* look like standard-fare Bombshell covers, and mostly what it says to me is the line's been cancelled so they opted not to put the time, effort and cash into these covers.
It makes me want to see if I can sell the other books in the series somewhere else, and get the *next* trilogy to have matching covers...