PERSISTENCE. PERIL. PARENTHOOD.Not necessarily in that order.Rein Mackenzie is doing his darnedest to give Liberty her wish of starting a family. Ready for action every time his wife’s ringtone–Wild Thing–summons him, the man is giving parenthood his best shot.Liberty Mackenzie knows she and her husband have had their share of heartache in the baby department, but both feel certain it’s only a matter of patient persistence before they get what they want. And Rein, bless his heart, can be very persistent.But just before Christmas, when fate offers them the chance to test drive parenthood with taking in a young boy to care for whose life is more complicated than it should be, they realize that having a child and raising a child are two very different challenges that every good parent faces.