Fans will relish every heart-stopping moment in the 13 episodes of this final season. New parents Brooke and Julian adjust to twin babies and two careers. Haley embarks on a crash course in crisis management when Nathan's work trip to Europe takes a dark and devastating turn. Quinn and Clay, Millie and Mouth, Alex and Chase strap themselves into love's roller coaster. Patriarchs resurface, long-unseen friends rally forces, and a foe is vanquished.