PARTY TIME — Larissa (Freema Agyeman) gives Carrie (AnnaSophia Robb) some harsh advice about her relationship with Sebastian (Austin Butler). When Harlan (guest star Scott Cohen) asks Tom (Matt Letscher) to work overnight on a top-secret case, Dorrit (Stefania Owen) decides to throw an impromptu get-together, which quickly spirals out of control. Meanwhile, Mouse (Ellen Wong) and Donna (Chloe Bridges) get surprisingly close and Sebastian makes a hasty decision after another fight with his parents. Freema Agyeman also stars. Andy Wolk directed the episode written by Logan Slakte.