[Book 3 of 4] Finally able to settle down and focus on themselves for a while, JJ and Emily truly learn what it's like to juggle work and their personal lives. It's not always easy, but they manage to make it work from the hardass Section Chief Erin Strauss, to Emily's parents who don't approve of JJ or their relationship. When JJ starts receiving letters with no return address, what will the team of profilers do to protect her?