Nathan (James Lafferty) learns of a shocking accusation that could threaten his career, much to the chagrin of his sports agent Clay (new series regular Robert Buckley, "Lipstick Jungle"). Brook (Sophia Bush) prepares to launch a new fashion line, and Julian (Austin Nichols) decides to produce a big movie. Haley's (Bethany Joy Galeotti) sister Quinn (new series regular Shantel VanSanten, "The Final Destination") makes a surprise visit. Meanwhile, Jamie (Jackson Brundage) celebrates his 7th birthday.