Lt. Caleb Holt lives by the old firefighter's adage: Never leave your partner behind. Inside burning buildings, it's his natural instinct. In the cooling embers of his marriage, it's another story. After a decade of marriage, Caleb and Catherine Holt have drifted so far apart that they are ready to move on without each other. Yet as they prepare to enter divorce proceedings, Caleb's dad asks his son to try an experiment: The Love Dare. While...