This week, Rachel Bilson and Melinda Clarke are discussing Season 4, Episode 9, “My Two Dads.” Rachel and Melinda discuss being Team Sandy, Summer and Seth’s dysfunctional engagement storyline, and Kaitlin’s storyline with Chris Brown. Then later, they are joined by two super fans to answer questions about this episode and their overall experience on The O.C. My Two Dads synopsis: Seth and Summer each look for a way to call off the wedding. Who will crack first? Ryan's biological father, Frank, plays the Big-C Card in hopes his son will see him.