S2, E5: The winter season finally comes to Newport, and Seth, Ryan, Summer and Marissa attend the annual SnO.C. Winter Ball. Julie and Jimmy spend some quality time together as the chairs of the host committee, and Sandy gets closer to the truth Caleb has been hiding. Meanwhile, Julie discovers Marissa's secret when Marissa leaves school at lunch and goes home to meet D.J. (recurring guest star NICHOLAS GONZALEZ).