As Brooke (Sophia Bush) angrily deals with Alexs (Jana Kramer) tryst with Julian (Austin Nichols), Lydias (guest star Bess Armstrong) condition worsens, prompting Quinn (Shantel VanSanten) and Haley (Bethany Joy Galeotti) to try to reconnect with Taylor (guest star Lindsey McKeon). Clay (Robert Buckley) is forced to deal with Katies (guest star Amanda Schull) unsettling advances, and Nathan (James Lafferty) helps Jamie (Jackson Brundage) come to terms with Lydias impending death.