Right after Mason Jefferson is elected sheriff, Mimi Cannady reveals that he's her little girl's father. Mason, enthusiastic about fatherhood, insists that the child live at Malfunction Junction, his family's ranch. Mimi has always loved Mason but wonders if he can ever see her as anyone other than a good friend who just happens to be the mother of his daughter. Mason's Marriage (4) is a touching finale to Tina Leonard's Cowboys by the Dozen miniseries. Mason and Mimi finally get their moment in the spotlight, and solving a family mystery brings peace to all.