Impossible Railways (2018)

S1E25 The Shower

Title: The Shower Plot: Marissa schemes to disrupt her mother's joy by bringing a figure from her past to the wedding shower, while Sandy tries to keep Theresa’s reappearance in the O.C. a secret from Ryan. When Ryan uncovers Sandy's deception and learns about Theresa's motives for returning, he finds himself in a perilous predicament. Meanwhile, Seth's lackluster initial encounter with Summer's dad casts uncertainty over their relationship.