The O.C. (2003)

S03E21 The Dawn Patrol

Title: The Dawn Patrol Plot: Ryan makes the choice to invite his mother to his upcoming graduation celebration. Meanwhile, Taylor and Summer team up to uncover the secret Seth is keeping, but their investigation leads to Summer getting injured. Marissa comes to a troubling realization about her surroundings when she discovers the depths of Volchok's friends' behavior. On a separate note, Sandy manages to resolve his issues with Matt at work, but in the process, he unintentionally causes pain to Kirsten.